Worldwide trends in body-mass index, underweight, overweight, and obesity from 1975 to 2016: a pooled analysis of 2416 population-based measurement studies in 128·9 million children, adolescents, and adults
Bentham, James ; Cesare, Mariachiara Di; Bilano, Ver ; Bixby, Honor ; Zhou, Bin ; Stevens, Gretchen A. ; Riley, Leanne M. ; Taddei, Cristina ; Hajifathalian, Kaveh ; Lu, Yuan ; Savin, Stefan ; Cowan, Melanie J. ; Paciorek, Christopher J. ; Chirita-Emandi, Adela ; Hayes, Alison J. ; Katz, Joanne ; Kelishadi, Roya ; Kengne, Andre Pascal ; Khang, Young Ho ; Laxmaiah, Avula ; Li, Yanping ; Ma, Jun ; Miranda, J.J. ; Mostafa, Aya ; Neovius, Martin ; Padez, Cristina ; Rampal, Lekhraj ; Zhu, Aubrianna ; Bennett, James E. ; Danaei, Goodarz ; Bhutta, Zulfiqar A. ; Ezzati, Majid ; Abarca-Gómez, Leandra ; Abdeen, Ziad A. ; Hamid, Zargar Abdul ; Abu-Rmeileh, Niveen M. ; Acosta-Cazares, Benjamin ; Acuin, Cecilia ; Adams, Robert J. ; Aekplakorn, Wichai ; Afsana, Kaosar ; Aguilar-Salinas, Carlos A. ; Ferrieres, Jean ; Jacobs, Jeremy M. ; Kromhout, Daan ; Ma, Guansheng ; Peeters, Petra H. ; Wang, Qian ; Wang, Ya Xing ; Wang, Ying Wei ; Geleijnse, J.M. - \ 2017
The Lancet 390 (2017)10113. - ISSN 0140-6736 - p. 2627 - 2642.
Background Underweight, overweight, and obesity in childhood and adolescence are associated with adverse health consequences throughout the life-course. Our aim was to estimate worldwide trends in mean body-mass index (BMI) and a comprehensive set of BMI categories that cover underweight to obesity in children and adolescents, and to compare trends with those of adults. Methods We pooled 2416 population-based studies with measurements of height and weight on 128·9 million participants aged 5 years and older, including 31·5 million aged 5–19 years. We used a Bayesian hierarchical model to estimate trends from 1975 to 2016 in 200 countries for mean BMI and for prevalence of BMI in the following categories for children and adolescents aged 5–19 years: more than 2 SD below the median of the WHO growth reference for children and adolescents (referred to as moderate and severe underweight hereafter), 2 SD to more than 1 SD below the median (mild underweight), 1 SD below the median to 1 SD above the median (healthy weight), more than 1 SD to 2 SD above the median (overweight but not obese), and more than 2 SD above the median (obesity). Findings Regional change in age-standardised mean BMI in girls from 1975 to 2016 ranged from virtually no change (−0·01 kg/m2 per decade; 95% credible interval −0·42 to 0·39, posterior probability [PP] of the observed decrease being a true decrease=0·5098) in eastern Europe to an increase of 1·00 kg/m2 per decade (0·69–1·35, PP>0·9999) in central Latin America and an increase of 0·95 kg/m2 per decade (0·64–1·25, PP>0·9999) in Polynesia and Micronesia. The range for boys was from a non-significant increase of 0·09 kg/m2 per decade (−0·33 to 0·49, PP=0·6926) in eastern Europe to an increase of 0·77 kg/m2 per decade (0·50–1·06, PP>0·9999) in Polynesia and Micronesia. Trends in mean BMI have recently flattened in northwestern Europe and the high-income English-speaking and Asia-Pacific regions for both sexes, southwestern Europe for boys, and central and Andean Latin America for girls. By contrast, the rise in BMI has accelerated in east and south Asia for both sexes, and southeast Asia for boys. Global age-standardised prevalence of obesity increased from 0·7% (0·4–1·2) in 1975 to 5·6% (4·8–6·5) in 2016 in girls, and from 0·9% (0·5–1·3) in 1975 to 7·8% (6·7–9·1) in 2016 in boys; the prevalence of moderate and severe underweight decreased from 9·2% (6·0–12·9) in 1975 to 8·4% (6·8–10·1) in 2016 in girls and from 14·8% (10·4–19·5) in 1975 to 12·4% (10·3–14·5) in 2016 in boys. Prevalence of moderate and severe underweight was highest in India, at 22·7% (16·7–29·6) among girls and 30·7% (23·5–38·0) among boys. Prevalence of obesity was more than 30% in girls in Nauru, the Cook Islands, and Palau; and boys in the Cook Islands, Nauru, Palau, Niue, and American Samoa in 2016. Prevalence of obesity was about 20% or more in several countries in Polynesia and Micronesia, the Middle East and north Africa, the Caribbean, and the USA. In 2016, 75 (44–117) million girls and 117 (70–178) million boys worldwide were moderately or severely underweight. In the same year, 50 (24–89) million girls and 74 (39–125) million boys worldwide were obese. Interpretation The rising trends in children's and adolescents' BMI have plateaued in many high-income countries, albeit at high levels, but have accelerated in parts of Asia, with trends no longer correlated with those of adults. Funding Wellcome Trust, AstraZeneca Young Health Programme.
Priorities for research in soil ecology
Eisenhauer, Nico ; Antunes, Pedro M. ; Bennett, Alison E. ; Birkhofer, Klaus ; Bissett, Andrew ; Bowker, Matthew A. ; Caruso, Tancredi ; Chen, Baodong ; Coleman, David C. ; Boer, Wietse de; Ruiter, Peter de; DeLuca, Thomas H. ; Frati, Francesco ; Griffiths, Bryan S. ; Hart, Miranda M. ; Hättenschwiler, Stephan ; Haimi, Jari ; Heethoff, Michael ; Kaneko, Nobuhiro ; Kelly, Laura C. ; Leinaas, Hans Petter ; Lindo, Zoë ; Macdonald, Catriona ; Rillig, Matthias C. ; Ruess, Liliane ; Scheu, Stefan ; Schmidt, Olaf ; Seastedt, Timothy R. ; Straalen, Nico M. van; Tiunov, Alexei V. ; Zimmer, Martin ; Powell, Jeff R. - \ 2017
Pedobiologia 63 (2017). - ISSN 0031-4056 - p. 1 - 7.
Aboveground-belowground interactions - Biodiversity–ecosystem functioning - Biogeography - Chemical ecology - Climate change - Ecosystem services - Global change - Microbial ecology - Novel environments - Plant-microbe interactions - Soil biodiversity - Soil food web - Soil management - Soil processes
The ecological interactions that occur in and with soil are of consequence in many ecosystems on the planet. These interactions provide numerous essential ecosystem services, and the sustainable management of soils has attracted increasing scientific and public attention. Although soil ecology emerged as an independent field of research many decades ago, and we have gained important insights into the functioning of soils, there still are fundamental aspects that need to be better understood to ensure that the ecosystem services that soils provide are not lost and that soils can be used in a sustainable way. In this perspectives paper, we highlight some of the major knowledge gaps that should be prioritized in soil ecological research. These research priorities were compiled based on an online survey of 32 editors of Pedobiologia – Journal of Soil Ecology. These editors work at universities and research centers in Europe, North America, Asia, and Australia. The questions were categorized into four themes: (1) soil biodiversity and biogeography, (2) interactions and the functioning of ecosystems, (3) global change and soil management, and (4) new directions. The respondents identified priorities that may be achievable in the near future, as well as several that are currently achievable but remain open. While some of the identified barriers to progress were technological in nature, many respondents cited a need for substantial leadership and goodwill among members of the soil ecology research community, including the need for multi-institutional partnerships, and had substantial concerns regarding the loss of taxonomic expertise.
Large meta-analysis of genome-wide association studies identifies five loci for lean body mass
Zillikens, M.C. ; Demissie, Serkalem ; Hsu, Yi Hsiang ; Yerges-Armstrong, Laura M. ; Chou, Wen Chi ; Stolk, Lisette ; Livshits, Gregory ; Broer, Linda ; Johnson, Toby ; Koller, Daniel L. ; Kutalik, Zoltán ; Luan, J.A. ; Malkin, Ida ; Ried, Janina S. ; Smith, Albert V. ; Thorleifsson, Gudmar ; Vandenput, Liesbeth ; Hua Zhao, Jing ; Zhang, Weihua ; Aghdassi, Ali ; Åkesson, Kristina ; Amin, Najaf ; Baier, Leslie J. ; Barroso, Inês ; Bennett, David A. ; Bertram, Lars ; Biffar, Rainer ; Bochud, Murielle ; Boehnke, Michael ; Borecki, Ingrid B. ; Buchman, Aron S. ; Byberg, Liisa ; Campbell, Harry ; Campos Obanda, Natalia ; Cauley, Jane A. ; Cawthon, Peggy M. ; Cederberg, Henna ; Chen, Zhao ; Cho, Nam H. ; Jin Choi, Hyung ; Claussnitzer, Melina ; Collins, Francis ; Cummings, Steven R. ; Jager, Philip L. De; Demuth, Ilja ; Dhonukshe-Rutten, Rosalie A.M. ; DIatchenko, Luda ; Eiriksdottir, Gudny ; Enneman, Anke W. ; Erdos, Mike ; Eriksson, Johan G. ; Eriksson, Joel ; Estrada, Karol ; Evans, Daniel S. ; Feitosa, Mary F. ; Fu, Mao ; Garcia, Melissa ; Gieger, Christian ; Girke, Thomas ; Glazer, Nicole L. ; Grallert, Harald ; Grewal, Jagvir ; Han, Bok Ghee ; Hanson, Robert L. ; Hayward, Caroline ; Hofman, Albert ; Hoffman, Eric P. ; Homuth, Georg ; Hsueh, Wen Chi ; Hubal, Monica J. ; Hubbard, Alan ; Huffman, Kim M. ; Husted, Lise B. ; Illig, Thomas ; Ingelsson, Erik ; Ittermann, Till ; Jansson, John Olov ; Jordan, Joanne M. ; Jula, Antti ; Karlsson, Magnus ; Khaw, Kay Tee ; Kilpelaïnen, Tuomas O. ; Klopp, Norman ; Kloth, Jacqueline S.L. ; Koistinen, Heikki A. ; Kraus, William E. ; Kritchevsky, Stephen ; Kuulasmaa, Teemu ; Kuusisto, Johanna ; Laakso, Markku ; Lahti, Jari ; Lang, Thomas ; Langdahl, Bente L. ; Launer, Lenore J. ; Lee, Jong Young ; Lerch, Markus M. ; Lewis, Joshua R. ; Lind, Lars ; Lindgren, Cecilia M. ; Liu, Yongmei ; Liu, Tian ; Liu, Youfang ; Ljunggren, Östen ; Lorentzon, Mattias ; Luben, Robert N. ; Maixner, William ; McGuigan, Fiona E. ; Medina-Gomez, Carolina ; Meitinger, Thomas ; Melhus, Håkan ; Mellström, Dan ; Melov, Simon ; Michaëlsson, Karl ; Mitchell, Braxton D. ; Morris, Andrew P. ; Mosekilde, Leif ; Newman, Anne ; Nielson, Carrie M. ; O'Connell, Jeffrey R. ; Oostra, Ben A. ; Orwoll, Eric S. ; Palotie, Aarno ; Parker, Stephan ; Peacock, Munro ; Perola, Markus ; Peters, Annette ; Polasek, Ozren ; Prince, Richard L. ; Raïkkönen, Katri ; Ralston, Stuart H. ; Ripatti, Samuli ; Robbins, John A. ; Rotter, Jerome I. ; Rudan, Igor ; Salomaa, Veikko ; Satterfield, Suzanne ; Schadt, Eric E. ; Schipf, Sabine ; Scott, Laura ; Sehmi, Joban ; Shen, Jian ; Soo Shin, Chan ; Sigurdsson, Gunnar ; Smith, Shad ; Soranzo, Nicole ; Stančáková, Alena ; Steinhagen-Thiessen, Elisabeth ; Streeten, Elizabeth A. ; Styrkarsdottir, Unnur ; Swart, Karin M.A. ; Tan, Sian Tsung ; Tarnopolsky, Mark A. ; Thompson, Patricia ; Thomson, Cynthia A. ; Thorsteinsdottir, Unnur ; Tikkanen, Emmi ; Tranah, Gregory J. ; Tuomilehto, Jaakko ; Schoor, Natasja M. van; Verma, Arjun ; Vollenweider, Peter ; Völzke, Henry ; Wactawski-Wende, Jean ; Walker, Mark ; Weedon, Michael N. ; Welch, Ryan ; Wichman, H.E. ; Widen, Elisabeth ; Williams, Frances M.K. ; Wilson, James F. ; Wright, Nicole C. ; Xie, Weijia ; Yu, Lei ; Zhou, Yanhua ; Chambers, John C. ; Döring, Angela ; Duijn, Cornelia M. Van; Econs, Michael J. ; Gudnason, Vilmundur ; Kooner, Jaspal S. ; Psaty, Bruce M. ; Spector, Timothy D. ; Stefansson, Kari ; Rivadeneira, Fernando ; Uitterlinden, André G. ; Wareham, Nicholas J. ; Ossowski, Vicky ; Waterworth, Dawn M. ; Loos, Ruth J.F. ; Karasik, David ; Harris, Tamara B. ; Ohlsson, Claes ; Kiel, Douglas P. - \ 2017
Nature Communications 8 (2017)1. - ISSN 2041-1723
Lean body mass, consisting mostly of skeletal muscle, is important for healthy aging. We performed a genome-wide association study for whole body (20 cohorts of European ancestry with n = 38,292) and appendicular (arms and legs) lean body mass (n = 28,330) measured using dual energy X-ray absorptiometry or bioelectrical impedance analysis, adjusted for sex, age, height, and fat mass. Twenty-one single-nucleotide polymorphisms were significantly associated with lean body mass either genome wide (p < 5 × 10-8) or suggestively genome wide (p < 2.3 × 10-6). Replication in 63,475 (47,227 of European ancestry) individuals from 33 cohorts for whole body lean body mass and in 45,090 (42,360 of European ancestry) subjects from 25 cohorts for appendicular lean body mass was successful for five single-nucleotide polymorphisms in/near HSD17B11, VCAN, ADAMTSL3, IRS1, and FTO for total lean body mass and for three single-nucleotide polymorphisms in/near VCAN, ADAMTSL3, and IRS1 for appendicular lean body mass. Our findings provide new insight into the genetics of lean body mass.
The evolution of process-based hydrologic models : Historical challenges and the collective quest for physical realism
Clark, Martyn P. ; Bierkens, Marc F.P. ; Samaniego, Luis ; Woods, Ross A. ; Uijlenhoet, Remko ; Bennett, Katrina E. ; Pauwels, Valentijn R.N. ; Cai, Xitian ; Wood, Andrew W. ; Peters-Lidard, Christa D. - \ 2017
Hydrology and Earth System Sciences 21 (2017)7. - ISSN 1027-5606 - p. 3427 - 3440.
The diversity in hydrologic models has historically led to great controversy on the "correct" approach to process-based hydrologic modeling, with debates centered on the adequacy of process parameterizations, data limitations and uncertainty, and computational constraints on model analysis. In this paper, we revisit key modeling challenges on requirements to (1) define suitable model equations, (2) define adequate model parameters, and (3) cope with limitations in computing power. We outline the historical modeling challenges, provide examples of modeling advances that address these challenges, and define outstanding research needs. We illustrate how modeling advances have been made by groups using models of different type and complexity, and we argue for the need to more effectively use our diversity of modeling approaches in order to advance our collective quest for physically realistic hydrologic models.
Belowground drivers of plant diversity
Putten, Wim H. Van Der - \ 2017
Science 355 (2017)6321. - ISSN 0036-8075 - p. 134 - 135.
Long before Ernst Haeckel coined the term “ecology” in 1866, nature explorers, such as Alexander von Humboldt, observed that vegetation composition changes with climate. However, it still remains unclear what determines the local composition and species richness of vegetation. Understanding the roles of belowground invertebrates and microbes is particularly challenging. On pages 173 and 181 of this issue, respectively, Teste et al. (1) and Bennett et al. (2) report field studies that elucidate the role of soil microorganisms as drivers of plant community composition.
The database of the PREDICTS (Projecting Responses of Ecological Diversity In Changing Terrestrial Systems) project
Hudson, Lawrence N. ; Newbold, Tim ; Contu, Sara ; Hill, Samantha L.L. ; Lysenko, Igor ; Palma, Adriana De; Phillips, Helen R.P. ; Alhusseini, Tamera I. ; Bedford, Felicity E. ; Bennett, Dominic J. ; Bugter, R.J.F. - \ 2017
Ecology and Evolution 7 (2017)1. - ISSN 2045-7758 - p. 145 - 188.
The PREDICTS project—Projecting Responses of Ecological Diversity In Changing Terrestrial Systems (www.predicts.org.uk)—has collated from published studies a large, reasonably representative database of comparable samples of biodiversity from multiple sites that differ in the nature or intensity of human impacts relating to land use. We have used this evidence base to develop global and regional statistical models of how local biodiversity responds to these measures. We describe and make freely available this 2016 release of the database, containing more than 3.2 million records sampled at over 26,000 locations and representing over 47,000 species. We outline how the database can help in answering a range of questions in ecology and conservation biology. To our knowledge, this is the largest and most geographically and taxonomically representative database of spatial comparisons of biodiversity that has been collated to date; it will be useful to researchers and international efforts wishing to model and understand the global status of biodiversity.
Drivers of Acceptance of a New Beverage in Europe
Silva, Ana ; Franco, Maria ; Mady, Cissé ; Pallet, Dominique ; Tomlins, Keith ; Bennett, Ben ; Pintado, Manuela ; Sottomayor, Miguel - \ 2016
Beverages 2 (2016)2. - ISSN 2306-5710 - p. 12 - 12.
One of the challenges of studying food consumption behavior is to identify the drivers of choice for a food product. This is particularly important to design and develop new foods for which no previous information is available. Hibiscus sabdariffa L. (Bissap) is an herbaceous plant and an important source of vitamins, minerals, and bioactive compounds, which confer a number of potential health benefits to derived products. The consumption of Bissap in beverage form is widespread in Africa and Asia, but not yet in Europe. Therefore, this study aimed to identify the main drivers of consumer acceptance of a traditional African beverage made from Bissap to which they had not been previously exposed. First, three focus groups (n = 22) were performed in Portugal to characterize the sensory profile of four Bissap beverages, to reveal perceptions and attitudes towards Bissap beverages, and to identify potential choice attributes. Subsequently, a full-profile conjoint analysis (n = 99) was performed, where consumers evaluated 37 Bissap beverage profiles, aiming to estimate choice attribute importance and to identify relevant market segments. Focus group findings showed that consumers would choose Bissap because they perceived as a healthy choice, and due to its novelty. The conjoint study showed an ideal profile for a Bissap beverage costing €0.99/L, <18 kcal/100 mL, packaged in Tetra-pack, light red color, and containing labeling information about antioxidants and Bissap. Four clusters of consumers were identified: price sensitive, body concerned, packaging attracted, and demanding, highlighting the most influential choice attributes: price, calories, and packaging. Findings provide useful guidance for new product development of an African product in the European lifestyle. Results might be useful from a nutraceutical point of view and to the food/beverages industry. View Full-Text
Bright spots: seeds of a good Anthropocene
Bennett, Elena M. ; Solan, Martin ; Biggs, Reinette ; McPhearson, Timon ; Norström, Albert V. ; Olsson, Per ; Pereira, Laura ; Peterson, Garry D. ; Raudsepp-Hearne, Ciara ; Biermann, Frank ; Carpenter, Stephen R. ; Ellis, Erle C. ; Hichert, Tanja ; Galaz, Victor ; Lahsen, Myanna ; Milkoreit, Manjana ; Martin López, Berta ; Nicholas, Kimberly A. ; Preiser, Rika ; Vince, Gaia ; Vervoort, Joost M. ; Xu, Jianchu - \ 2016
Frontiers in Ecology and the Environment 14 (2016)8. - ISSN 1540-9295 - p. 441 - 448.
The scale, rate, and intensity of humans’ environmental impact has engendered broad discussion about how to find plausible pathways of development that hold the most promise for fostering a better future in the Anthropocene. However, the dominance of dystopian visions of irreversible environmental degradation and societal collapse, along with overly optimistic utopias and business-as-usual scenarios that lack insight and innovation, frustrate progress. Here, we present a novel approach to thinking about the future that builds on experiences drawn from a diversity of practices, worldviews, values, and regions that could accelerate the adoption of pathways to transformative change (change that goes beyond incremental improvements). Using an analysis of 100 initiatives, or “seeds of a good Anthropocene”, we find that emphasizing hopeful elements of existing practice offers the opportunity to: (1) understand the values and features that constitute a good Anthropocene, (2) determine the processes that lead to the emergence and growth of initiatives that fundamentally change human–environmental relationships, and (3) generate creative, bottom-up scenarios that feature well-articulated pathways toward a more positive future.
Predicting the health impact of lowering salt consumption in Turkey using the DYNAMO health impact assessment tool
Erkoyun, E. ; Sözmen, K. ; Bennett, K. ; Unal, B. ; Boshuizen, H.C. - \ 2016
Public Health 140 (2016). - ISSN 0033-3506 - p. 228 - 234.
Cardiovascular diseases - Cerebrovascular disease - Disease modelling - Health impact assessment - Ischaemic heart disease - Salt consumption
Objective To estimate the impact of three daily salt consumption scenarios on the prevalence and incidence of ischaemic heart disease (IHD) and cerebrovascular disease in 2025 in the Turkish population aged ≥30 years using the DYNAMO Health Impact Assessment tool. Study design Statistical disease modelling study. Methods DYNAMO health impact assessment was populated using data from Turkey to estimate the prevalence and incidence of IHD and cerebrovascular disease in 2025. TurkSTAT data were used for demographic data, and national surveys were used for salt consumption and disease-specific burden. Three salt consumption scenarios were modelled: (1) reference scenario: mean salt consumption stays the same from 2012–2013 until 2025; (2) gradual decline: daily salt intake reduces steadily by 0.47 g per year by lowering salt intake from bread by 50% and from table salt by 40% by 2025; and (3) World Health Organization (WHO) advice: daily salt intake of 5 g per day from 2013 until 2025. Results The gradual decline scenario would lead to a decrease in the prevalence of IHD and cerebrovascular disease by 0.3% and 0.2%, respectively, and a decrease in the incidence by 0.6 and 0.4 per 1000, respectively. Following WHO's advice would lead to a decrease in the prevalence of IHD and cerebrovascular disease by 0.8% and 0.5%, respectively, and a decrease in the incidence by 1.0 and 0.7 per 1000, respectively. Conclusion This model indicates that Turkey can lower its future cardiovascular disease burden by following the gradual decline scenario. Following WHO's advice would achieve an even greater benefit.
The 2016 release of the PREDICTS database
Hudson, Lawrence N. ; Newbold, Tim ; Contu, Sara ; Hill, Samantha L.L. ; Lysenko, Igor ; Palma, Adriana De; Phillips, Helen R.P. ; Alhusseini, Tamera I. ; Bedford, Felicity E. ; Bennett, Dominic J. ; Bugter, R.J.F. - \ 2016
Natural History Museum, London
alpha diversity - global diversity modelling - global change - habitat destruction - land cover - land use - terrestrial biodiversity
Potential health gains and health losses in eleven EU countries attainable through feasible prevalences of the life-style related risk factors alcohol, BMI, and smoking : A quantitative health impact assessment
Lhachimi, Stefan K. ; Nusselder, Wilma J. ; Smit, Henriette A. ; Baili, Paolo ; Bennett, Kathleen ; Fernández, Esteve ; Kulik, Margarete C. ; Lobstein, Tim ; Pomerleau, Joceline ; Boshuizen, Hendriek C. ; MacKenbach, Johan P. - \ 2016
BMC Public Health 16 (2016)1. - ISSN 1471-2458
Alcohol - BMI - Health impact assessment - Life-style related risk-factors - Modeling - Smoking
Background: Influencing the life-style risk-factors alcohol, body mass index (BMI), and smoking is an European Union (EU) wide objective of public health policy. The population-level health effects of these risk-factors depend on population specific characteristics and are difficult to quantify without dynamic population health models. Methods: For eleven countries - approx. 80 % of the EU-27 population - we used evidence from the publicly available DYNAMO-HIA data-set. For each country the age- and sex-specific risk-factor prevalence and the incidence, prevalence, and excess mortality of nine chronic diseases are utilized; including the corresponding relative risks linking risk-factor exposure causally to disease incidence and all-cause mortality. Applying the DYNAMO-HIA tool, we dynamically project the country-wise potential health gains and losses using feasible, i.e. observed elsewhere, risk-factor prevalence rates as benchmarks. The effects of the "worst practice", "best practice", and the currently observed risk-factor prevalence on population health are quantified and expected changes in life expectancy, morbidity-free life years, disease cases, and cumulative mortality are reported. Results: Applying the best practice smoking prevalence yields the largest gains in life expectancy with 0.4 years for males and 0.3 year for females (approx. 332,950 and 274,200 deaths postponed, respectively) while the worst practice smoking prevalence also leads to the largest losses with 0.7 years for males and 0.9 year for females (approx. 609,400 and 710,550 lives lost, respectively). Comparing morbidity-free life years, the best practice smoking prevalence shows the highest gains for males with 0.4 years (342,800 less disease cases), whereas for females the best practice BMI prevalence yields the largest gains with 0.7 years (1,075,200 less disease cases). Conclusion: Smoking is still the risk-factor with the largest potential health gains. BMI, however, has comparatively large effects on morbidity. Future research should aim to improve knowledge of how policies can influence and shape individual and aggregated life-style-related risk-factor behavior.
Quiescent center initiation in the Arabidopsis lateral root primordia is dependent on the SCARECROW transcription factor
Goh, Tatsuaki ; Toyokura, Koichi ; Wells, Darren M. ; Swarup, Kamal ; Yamamoto, Mayuko ; Mimura, Tetsuro ; Weijers, Dolf ; Fukaki, Hidehiro ; Laplaze, Laurent ; Bennett, Malcolm J. ; Guyomarc’h, Soazig - \ 2016
Development 143 (2016)18. - ISSN 0950-1991 - p. 3363 - 3371.
3D live imaging - Arabidopsis thaliana - Lateral root organogenesis - Quiescent center - SCARECROW
Lateral root formation is an important determinant of root system architecture. In Arabidopsis, lateral roots originate from pericycle cells, which undergo a program of morphogenesis to generate a new lateral root meristem. Despite its importance for root meristem organization, the onset of quiescent center (QC) formation during lateral root morphogenesis remains unclear. Here, we used live 3D confocal imaging to monitor cell organization and identity acquisition during lateral root development. Our dynamic observations revealed an early morphogenesis phase and a late meristem formation phase as proposed in the bi-phasic growth model. Establishment of lateral root QCs coincided with this developmental phase transition. QC precursor cells originated from the outer layer of stage II lateral root primordia, within which the SCARECROW (SCR) transcription factor was specifically expressed. Disrupting SCR function abolished periclinal divisions in this lateral root primordia cell layer and perturbed the formation of QC precursor cells. We conclude that de novo QC establishment in lateral root primordia operates via SCR-mediated formative cell division and coincides with the developmental phase transition.
A century of ecosystem change: human and seabird impacts on plant species extirpation and invasion on islands
Lameris, Thomas K. ; Bennett, Joseph R. ; Blight, Louise K. ; Giesen, Marissa ; Janssen, Michael H. ; Schaminée, Joop J.H.J. ; Arcese, Peter - \ 2016
PeerJ 4 (2016). - ISSN 2167-8359
We used 116 years of floral and faunal records from Mandarte Island, British Columbia, Canada, to estimate the indirect effects of humans on plant communities via their effects on the population size of a surface-nesting, colonial seabird, the Glaucous-winged gull (Larus glaucescens). Comparing current to historical records revealed 18 extirpations of native plant species (32% of species historically present), 31 exotic species introductions, and one case of exotic introduction followed by extirpation. Contemporary surveys indicated that native species cover declined dramatically from 1986 to 2006, coincident with the extirpation of ‘old-growth’ conifers. Because vegetation change co-occurred with an increasing gull population locally and regionally, we tested several predictions from the hypothesis that the presence and activities of seabirds help to explain those changes. Specifically, we predicted that on Mandarte and nearby islands with gull colonies, we should observe higher nutrient loading and exotic plant species richness and cover than on nearby islands without gull colonies, as a consequence of competitive dominance in species adapted to high soil nitrogen and trampling. As predicted, we found that native plant species cover and richness were lower, and exotic species cover and richness higher, on islands with versus without gull colonies. In addition, we found that soil carbon and nitrogen on islands with nesting gulls were positively related to soil depth and exotic species richness and cover across plots and islands. Our results support earlier suggestions that nesting seabirds can drive rapid change in insular plant communities by increasing nutrients and disturbing vegetation, and that human activities that affect seabird abundance may therefore indirectly affect plant community composition on islands with seabird colonies.
APOE e4 and the associations of seafood and long-chain omega-3 fatty acids with cognitive decline
Rest, Ondine van de; Wang, Yamin ; Barnes, Lisa L. ; Tangney, Christine ; Bennett, David A. ; Morris, Martha Clare - \ 2016
Neurology 86 (2016)22. - ISSN 0028-3878 - p. 2063 - 2070.
Objective: To examine the association between consumption of seafood and long-chain n-3 fatty acids with change in 5 cognitive domains over an average of 4.9 years. Methods: From an ongoing longitudinal, community-based epidemiologic study of aging and dementia (the Rush Memory and Aging Project), we included 915 participants (age 81.4 6 7.2 years, 25% men) who had completed at least one follow-up cognitive assessment and dietary data. Diet was assessed by semiquantitative food frequency questionnaire. Scores for global cognitive function and 5 cognitive domains (episodic, semantic, and working memory, perceptual speed, and visuospatial ability) were assessed using 19 cognitive tests. Mixed models adjusted for multiple risk factors of cognitive change were used to assess the associations. Results: Consumption of seafood was associated with slower decline in semantic memory (b 5 0.024; p 5 0.03) and perceptual speed (b 5 0.020; p 5 0.05) in separate models adjusted for age, sex, education, participation in cognitive activities, physical activity, alcohol consumption, smoking, and total energy intake. In secondary analyses, APOE e4 carriers demonstrated slower rates of decline in global cognition and in multiple cognitive domains with weekly seafood consumption and with moderate to high long-chain n-3 fatty acid intake from food. These associations were not present in APOE e4 noncarriers. Higher intake levels of a-linolenic acid were associated with slower global cognitive decline, but also only in APOE e4 carriers. Conclusions: These results suggest protective relations of one meal per week of seafood and long-chain n-3 fatty acids against decline in multiple cognitive domains. The role of APOE e4 in this association needs further study.
What does it mean to teach ‘interpretively’?
Dodge, Jennifer ; Holtzman, Richard ; Hulst, Merlijn van; Yanow, D. - \ 2016
Learning and Teaching 9 (2016)1. - ISSN 1755-2273 - p. 73 - 84.
The ‘interpretive turn’ has gained traction as a research approach in recent decades in the empirical social sciences. While the contributions of interpretive research and interpretive research methods are clear, we wonder: Does an interpretive perspective lend itself to – or even demand – a particular style of teaching? This question was at the heart of a roundtable discussion we organised at the 2014 Interpretive Policy Analysis (IPA) International Conference. This essay reports on the contours of the discussion, with a focus on our reflections upon what it might mean to teach ‘interpretively’. Prior to outlining these, we introduce the defining characteristics of an interpretive perspective and describe our respective experiences and interests in this conversation. In the hope that this essay might constitute the beginning of a wider conversation, we close it with an invitation for others to respond.
Volume: 9 Issue: 1
Penny Welch and Susan Wright
Alienating students: Marxist theory in action
Megan Thiele, Yung-Yi Diana Pan and Devin Molina
Naïve scientists and conflict analysis: learning through case studies
R. Williams Ayres
Assessment rubrics: thinking inside the boxes
What does it mean to teach ‘interpretively’?
Jennifer Dodge, Richard Holtzman, Merlijn van Hulst and Dvora Yanow
Making the best of an inappropriate textbook: using an ‘international edition’ to teach critical thinking and intercultural understanding
Kristina C. Marcellus
From steward to leader: a decade of shifting roles for the PhD student
Association of Seafood Consumption, Brain Mercury Level, and APOEε4 Status With Brain Neuropathology in OlderAdults
Morris, Martha Clare ; Brockman, John ; Schneider, J. ; Wang, Yamin ; Bennett, D. ; Tangney, Christy ; Rest, O. van de - \ 2016
JAMA: The Journal of the American Medical Association 315 (2016)5. - ISSN 0098-7484 - p. 489 - 497.
Importance Seafood consumption is promoted for its many health benefits even though its contamination by mercury, a known neurotoxin, is a growing concern.
Objective To determine whether seafood consumption is correlated with increased brain mercury levels and also whether seafood consumption or brain mercury levels are correlated with brain neuropathologies.
Design, Setting, and Participants Cross-sectional analyses of deceased participants in the Memory and Aging Project clinical neuropathological cohort study, 2004-2013. Participants resided in Chicago retirement communities and subsidized housing. The study included 286 autopsied brains of 554 deceased participants (51.6%). The mean (SD) age at death was 89.9 (6.1) years, 67% (193) were women, and the mean (SD) educational attainment was 14.6 (2.7) years.
Exposures Seafood intake was first measured by a food frequency questionnaire at a mean of 4.5 years before death.
Main Outcomes and Measures Dementia-related pathologies assessed were Alzheimer disease, Lewy bodies, and the number of macroinfarcts and microinfarcts. Dietary consumption of seafood and n-3 fatty acids was annually assessed by a food frequency questionnaire in the years before death. Tissue concentrations of mercury and selenium were measured using instrumental neutron activation analyses.
Results Among the 286 autopsied brains of 544 participants, brain mercury levels were positively correlated with the number of seafood meals consumed per week (ρ = 0.16; P = .02). In models adjusted for age, sex, education, and total energy intake, seafood consumption (≥ 1 meal[s]/week) was significantly correlated with less Alzheimer disease pathology including lower density of neuritic plaques (β = −0.69 score units [95% CI, −1.34 to −0.04]), less severe and widespread neurofibrillary tangles (β = −0.77 score units [95% CI, −1.52 to −0.02]), and lower neuropathologically defined Alzheimer disease (β = −0.53 score units [95% CI, −0.96 to −0.10]) but only among apolipoprotein E (APOE ε4) carriers. Higher intake levels of α-linolenic acid (18:3 n-3) were correlated with lower odds of cerebral macroinfarctions (odds ratio for tertiles 3 vs 1, 0.51 [95% CI, 0.27 to 0.94]). Fish oil supplementation had no statistically significant correlation with any neuropathologic marker. Higher brain concentrations of mercury were not significantly correlated with increased levels of brain neuropathology.
Conclusions and Relevance In cross-sectional analyses, moderate seafood consumption was correlated with lesser Alzheimer disease neuropathology. Although seafood consumption was also correlated with higher brain levels of mercury, these levels were not correlated with brain neuropathology.
Update on the Global Burden of Ischemic and Hemorrhagic Stroke in 1990-2013: The GBD 2013 Study
Feigin, V.L. ; Krishnamurthi, R.V. ; Parmar, P. ; Norrving, B. ; Mensah, G.A. ; Bennett, D. ; Barker-Collo, S. ; Moran, A.E. ; Sacco, R.L. ; Truelsen, T. ; Davis, S.C. ; Pandian, J.D. ; Naghavi, M.R. ; Forouzanfar, M.H. ; Nguyen, G. ; Johnson, C. ; Vos, T. ; Meretoja, A. ; Murray, C.J. ; Roth, G.A. ; Geleijnse, J.M. - \ 2015
Neuroepidemiology 45 (2015)3. - ISSN 0251-5350 - p. 161 - 176.
Background: Global stroke epidemiology is changing rapidly. Although age-standardized rates of stroke mortality have decreased worldwide in the past 2 decades, the absolute numbers of people who have a stroke every year, and live with the consequences of stroke or die from their stroke, are increasing. Regular updates on the current level of stroke burden are important for advancing our knowledge on stroke epidemiology and facilitate organization and planning of evidence-based stroke care. Objectives: This study aims to estimate incidence, prevalence, mortality, disability-adjusted life years (DALYs) and years lived with disability (YLDs) and their trends for ischemic stroke (IS) and hemorrhagic stroke (HS) for 188 countries from 1990 to 2013. Methodology: Stroke incidence, prevalence, mortality, DALYs and YLDs were estimated using all available data on mortality and stroke incidence, prevalence and excess mortality. Statistical models and country-level covariate data were employed, and all rates were age-standardized to a global population. All estimates were produced with 95% uncertainty intervals (UIs). Results: In 2013, there were globally almost 25.7 million stroke survivors (71% with IS), 6.5 million deaths from stroke (51% died from IS), 113 million DALYs due to stroke (58% due to IS) and 10.3 million new strokes (67% IS). Over the 1990-2013 period, there was a significant increase in the absolute number of DALYs due to IS, and of deaths from IS and HS, survivors and incident events for both IS and HS. The preponderance of the burden of stroke continued to reside in developing countries, comprising 75.2% of deaths from stroke and 81.0% of stroke-related DALYs. Globally, the proportional contribution of stroke-related DALYs and deaths due to stroke compared to all diseases increased from 1990 (3.54% (95% UI 3.11-4.00) and 9.66% (95% UI 8.47-10.70), respectively) to 2013 (4.62% (95% UI 4.01-5.30) and 11.75% (95% UI 10.45-13.31), respectively), but there was a diverging trend in developed and developing countries with a significant increase in DALYs and deaths in developing countries, and no measurable change in the proportional contribution of DALYs and deaths from stroke in developed countries. Conclusion: Global stroke burden continues to increase globally. More efficient stroke prevention and management strategies are urgently needed to halt and eventually reverse the stroke pandemic, while universal access to organized stroke services should be a priority.
Sex Differences in Stroke Incidence, Prevalence, Mortality and Disability-Adjusted Life Years: Results from the Global Burden of Disease Study 2013
Barker-Collo, S. ; Bennett, D. ; Krishnamurthi, R.V. ; Parmar, P. ; Feigin, V.L. ; Naghavi, M.R. ; Forouzanfar, M.H. ; Johnson, C. ; Nguyen, G. ; Mensah, G.A. ; Vos, T. ; Murray, C.J. ; Roth, G.A. ; Geleijnse, J.M. - \ 2015
Neuroepidemiology 45 (2015)3. - ISSN 0251-5350 - p. 203 - 214.
Background: Accurate information on stroke burden in men and women are important for evidence-based healthcare planning and resource allocation. Previously, limited research suggested that the absolute number of deaths from stroke in women was greater than in men, but the incidence and mortality rates were greater in men. However, sex differences in various metrics of stroke burden on a global scale have not been a subject of comprehensive and comparable assessment for most regions of the world, nor have sex differences in stroke burden been examined for trends over time. Methods: Stroke incidence, prevalence, mortality, disability-adjusted life years (DALYs) and healthy years lost due to disability were estimated as part of the Global Burden of Disease (GBD) 2013 Study. Data inputs included all available information on stroke incidence, prevalence and death and case fatality rates. Analysis was performed separately by sex and 5-year age categories for 188 countries. Statistical models were employed to produce globally comprehensive results over time. All rates were age-standardized to a global population and 95% uncertainty intervals (UIs) were computed. Findings: In 2013, global ischemic stroke (IS) and hemorrhagic stroke (HS) incidence (per 100,000) in men (IS 132.77 (95% UI 125.34-142.77); HS 64.89 (95% UI 59.82-68.85)) exceeded those of women (IS 98.85 (95% UI 92.11-106.62); HS 45.48 (95% UI 42.43-48.53)). IS incidence rates were lower in 2013 compared with 1990 rates for both sexes (1990 male IS incidence 147.40 (95% UI 137.87-157.66); 1990 female IS incidence 113.31 (95% UI 103.52-123.40)), but the only significant change in IS incidence was among women. Changes in global HS incidence were not statistically significant for males (1990 = 65.31 (95% UI 61.63-69.0), 2013 = 64.89 (95% UI 59.82-68.85)), but was significant for females (1990 = 64.892 (95% UI 59.82-68.85), 2013 = 45.48 (95% UI 42.427-48.53)). The number of DALYs related to IS rose from 1990 (male = 16.62 (95% UI 13.27-19.62), female = 17.53 (95% UI 14.08-20.33)) to 2013 (male = 25.22 (95% UI 20.57-29.13), female = 22.21 (95% UI 17.71-25.50)). The number of DALYs associated with HS also rose steadily and was higher than DALYs for IS at each time point (male 1990 = 29.91 (95% UI 25.66-34.54), male 2013 = 37.27 (95% UI 32.29-45.12); female 1990 = 26.05 (95% UI 21.70-30.90), female 2013 = 28.18 (95% UI 23.68-33.80)). Interpretation: Globally, men continue to have a higher incidence of IS than women while significant sex differences in the incidence of HS were not observed. The total health loss due to stroke as measured by DALYs was similar for men and women for both stroke subtypes in 2013, with HS higher than IS. Both IS and HS DALYs show an increasing trend for both men and women since 1990, which is statistically significant only for IS among men. Ongoing monitoring of sex differences in the burden of stroke will be needed to determine if disease rates among men and women continue to diverge. Sex disparities related to stroke will have important clinical and policy implications that can guide funding and resource allocation for national, regional and global health programs.
Dynamic Nomadic Cadastres
Lengoiboni, M.N. ; Bregt, A.K. ; Molen, P. van der - \ 2015
In: Advances in Responsible Land Administration / Zevenbergen, J., de Vries, W., Bennett, R.M., Boca Raton, USA : CRC Press - ISBN 9781498719612 - p. 183 - 200.
Planetary boundaries: guiding human development on a changing planet
Steffen, W. ; Richardson, K. ; Rockström, J. ; Cornell, S.E. ; Fetzer, I. ; Bennett, E. ; Biggs, R. ; Vries, W. de - \ 2015
Science 347 (2015)6223. - ISSN 0036-8075
environmental flow requirements - early-warning signals - safe operating space - functional diversity - critical transitions - nutrient limitation - marine-environment - biodiversity loss - climate - water
The planetary boundaries framework defines a safe operating space for humanity based on the intrinsic biophysical processes that regulate the stability of the Earth System. Here, we revise and update the planetary boundaries framework, with a focus on the underpinning biophysical science, based on targeted input from expert research communities and on more general scientific advances over the past 5 years. Several of the boundaries now have a two-tier approach, reflecting the importance of cross-scale interactions and the regional-level heterogeneity of the processes that underpin the boundaries. Two core boundaries—climate change and biosphere integrity—have been identified, each of which has the potential on its own to drive the Earth System into a new state should they be substantially and persistently transgressed.