**OBJECTIVE: **This study contributes to the literature on the income and wealth consequences of obesity by exploiting recent discoveries about the genetic basis of BMI.

**METHODS: **The relation between a genetic risk score (GRS) for BMI, which reflects the genetic predisposition to have a higher body weight, and income and wealth was analyzed in a longitudinal data set comprising 5,962 individuals (22,490 individual-year observations) from the US Health and Retirement Study.

**RESULTS: **Empirical analyses showed that the GRS for BMI lowers individual income and household wealth through the channel of lower educational attainment. Sex-stratified analyses showed that this effect is particularly significant among females.

**CONCLUSIONS: **This study provides support for the negative effects of the GRS for BMI on individual income and household wealth through lower education for females. For males, the effects are estimated to be smaller and insignificant. The larger effects for females compared with males may be due to greater labor market taste-based discrimination faced by females.

**PURPOSE: **Comfort eating is a prevalent behavior. Prior research shows that comfort eating is associated with reduced stress responses and increased metabolic risk across adolescence, young adulthood, and middle adulthood. The purpose of the current research was to test if comfort eating prospectively predicted all-cause mortality in older adulthood.

**METHOD: **The US Health and Retirement Study is an ongoing, nationally representative, longitudinal study of older adults. The final sample for the present study (N = 1445) included participants randomly selected to report how often they comfort ate. Comfort eating data were collected in 2008 and all-cause mortality data were collected in 2014. Participants also reported how often they consumed high-fat/sugar food as well as their height and weight in 2008.

**RESULTS: **For each 1-unit increase in comfort eating, the expected odds of all-cause mortality (n = 255 deceased) decreased by 14%, OR = 0.86, p = 0.048, 95% CI [0.74, 0.99]. This analysis statistically accounted for other predictors of mortality in the sample including age, biological sex, race, highest educational degree attained, moderate and vigorous exercise, smoking, and cumulative illness. High-fat/sugar intake did not mediate (or diminish) the association but body mass index did.

**CONCLUSION: **Comfort eating-irrespective of consuming high-fat/sugar food-may be associated with reduced mortality in older adults because it may promote greater body mass, and greater body mass is associated with lower risk of mortality in nationally representative samples. Interventionists might consider both beneficial and detrimental aspects of comfort eating across the lifespan.

Childhood socioeconomic status (SES) is inversely associated with adult weight in high income countries. Whether the influence of childhood SES on adult weight is best described using a critical period model or an accumulation of risk model is not yet settled. This research tests whether childhood SES is associated with adult BMI and likelihood of obesity independent of adult socioeconomic status and neighborhood characteristics. Data on individual childhood and adult characteristics come from the Health and Retirement Study (N = 13,545). Data on neighborhood characteristics come from the 2000 Decennial Census and American Community Survey (2005-2009). In the fully adjusted models, perceived financial hardship before the age of sixteen and having a father who was unemployed are associated with higher BMI among males and, among females, paternal education remains associated with adult BMI. However, childhood SES is not associated with likelihood of obesity after fully adjusting for adult SES and neighborhood characteristics, suggesting that the direct effects of early childhood SES on BMI are small relative to the other factors associated with obesity in adulthood.

VL - 12 UR - http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0168481 IS - 1 ER - TY - JOUR T1 - Genotype–covariate interaction effects and the heritability of adult body mass index JF - Nature Genetics Y1 - 2017 A1 - Robinson, Matthew R. A1 - English, Geoffrey A1 - Moser, Gerhard A1 - Lloyd-Jones, Luke R. A1 - Triplett, Marcus A. A1 - Zhu, Zhihong A1 - Ilja M. Nolte A1 - Jana V. van Vliet-Ostaptchouk A1 - Snieder, Harold A1 - Tõnu Esko A1 - Lili Milani A1 - Mägi, Reedik A1 - Andres Metspalu A1 - Patrik K. E. Magnusson A1 - Nancy L. Pedersen A1 - Ingelsson, Erik A1 - Johannesson, Magnus A1 - Yang, Jian A1 - Cesarini, David A1 - Peter M. Visscher KW - BMI KW - Genetics KW - GWAS AB - Obesity is a worldwide epidemie, with major health and economic costs. Here we estimate heritability for body mass index (BMI) in 172,000 sibling pairs and 150,832 unrelated individuals and explore the contribution of genotype-covariate interaction effects at common SNP loci. We find evidence for genotype-age interaction (likelihood ratio test (LRT) = 73.58, degrees of freedom (df) = 1, P = 4.83 x 10-18), which contributed 8.1 % (1.4% s.e.) to BMI variation. Across eight self-reported lifestyle factors, including diet and exercise, we find genotype-environment interaction only for smoking behavior (LRT = 19.70, P = 5.03 x 10-5 and LRT = 30.80, P = 1.42 x 10-8), which contributed 4.0% (0.8% s.e.) to BMI variation. Bayesian association analysis suggests that BMI is highly polygenic, with 75% of the SNP heritability attributable to loci that each explain <0.01 % of the phenotypic variance. Our findings imply that substantially larger sample sizes across ages and lifestyles are required to understand the full genetic architecture of BMI. VL - 49 UR - http://www.nature.com/doifinder/10.1038/ng.3912http://www.nature.com/doifinder/10.1038/ng.3912 IS - 8 JO - Nat Genet ER - TY - JOUR T1 - A method to estimate the contribution of regional genetic associations to complex traits from summary association statistics. JF - Scientific reports Y1 - 2016 A1 - Pare, Guillaume A1 - Mao, Shihong A1 - Wei Q. Deng KW - BMI KW - Older Adults KW - Regional associations AB -Despite considerable efforts, known genetic associations only explain a small fraction of predicted heritability. Regional associations combine information from multiple contiguous genetic variants and can improve variance explained at established association loci. However, regional associations are not easily amenable to estimation using summary association statistics because of sensitivity to linkage disequilibrium (LD). We now propose a novel method, LD Adjusted Regional Genetic Variance (LARGV), to estimate phenotypic variance explained by regional associations using summary statistics while accounting for LD. Our method is asymptotically equivalent to a multiple linear regression model when no interaction or haplotype effects are present. It has several applications, such as ranking of genetic regions according to variance explained or comparison of variance explained by two or more regions. Using height and BMI data from the Health Retirement Study (N = 7,776), we show that most genetic variance lies in a small proportion of the genome and that previously identified linkage peaks have higher than expected regional variance.

VL - 6 UR - http://www.ncbi.nlm.nih.gov/pubmed/27273519 ER - TY - JOUR T1 - Trajectories of body mass indices and development of frailty: Evidence from the health and retirement study. JF - Obesity (Silver Spring) Y1 - 2016 A1 - Briana Mezuk A1 - Matthew Lohman A1 - Rock, Andrew K A1 - Payne, Martha E KW - BMI KW - Frailty KW - Older Adults KW - Weight Change AB -**OBJECTIVE: **To estimate trajectories of body mass index (BMI) and determine their association with incident frailty in later life.

**METHODS: **Data come from the 2004 to 2012 waves of the Health and Retirement Study, a longitudinal survey of older adults. Analysis was restricted to respondents who were not frail at baseline (n = 10,827). BMI (kg/m(2) ) was calculated from self-reported weight and height. Incident frailty was assessed using the Frailty Index. Longitudinal growth mixture modeling was used to estimate the relationship between BMI trajectories and incident frailty over a 10-year period.

**RESULTS: **Four trajectory classes were identified: weight gain (n = 162 [1.4%], mean final BMI = 42 kg/m(2) ), weight loss (n = 171 [1.7%], mean final BMI = 25.0 kg/m(2) ), consistent obesity (n = 640 [6.8%], mean final BMI = 34.7 kg/m(2) ), and consistent overweight (n = 9,864 [90.1%] mean final BMI = 26.0 kg/m(2) ). Cumulative incidence of frailty was 19.9%. Relative to the consistent overweight class, the weight gain class had the highest likelihood of incident frailty (odds ratio, OR: 3.61, 95% confidence interval, CI: 2.39-5.46). The consistent obesity (OR: 2.72, 95% CI: 2.06-3.58) and weight loss (OR: 2.81, 95% CI: 1.84-4.30) classes had similarly elevated risk of frailty.

**CONCLUSIONS: **Weight change and obesity are associated with risk of frailty.

Polymorphisms rs6232 and rs6234/rs6235 in PCSK1 have been associated with extreme obesity [e.g. body mass index (BMI) ≥ 40 kg/m(2)], but their contribution to common obesity (BMI ≥ 30 kg/m(2)) and BMI variation in a multi-ethnic context is unclear. To fill this gap, we collected phenotypic and genetic data in up to 331 175 individuals from diverse ethnic groups. This process involved a systematic review of the literature in PubMed, Web of Science, Embase and the NIH GWAS catalog complemented by data extraction from pre-existing GWAS or custom-arrays in consortia and single studies. We employed recently developed global meta-analytic random-effects methods to calculate summary odds ratios (OR) and 95% confidence intervals (CIs) or beta estimates and standard errors (SE) for the obesity status and BMI analyses, respectively. Significant associations were found with binary obesity status for rs6232 (OR = 1.15, 95% CI 1.06-1.24, P = 6.08 × 10(-6)) and rs6234/rs6235 (OR = 1.07, 95% CI 1.04-1.10, P = 3.00 × 10(-7)). Similarly, significant associations were found with continuous BMI for rs6232 (β = 0.03, 95% CI 0.00-0.07; P = 0.047) and rs6234/rs6235 (β = 0.02, 95% CI 0.00-0.03; P = 5.57 × 10(-4)). Ethnicity, age and study ascertainment significantly modulated the association of PCSK1 polymorphisms with obesity. In summary, we demonstrate evidence that common gene variation in PCSK1 contributes to BMI variation and susceptibility to common obesity in the largest known meta-analysis published to date in genetic epidemiology.

VL - 24 IS - 12 ER - TY - JOUR T1 - Genetic studies of body mass index yield new insights for obesity biology. JF - Nature Y1 - 2015 A1 - Locke, Adam E A1 - Kahali, Bratati A1 - Berndt, Sonja I A1 - Justice, Anne E A1 - Pers, Tune H A1 - Day, Felix R A1 - Powell, Corey A1 - Vedantam, Sailaja A1 - Buchkovich, Martin L A1 - Yang, Jian A1 - Croteau-Chonka, Damien C A1 - Tõnu Esko A1 - Fall, Tove A1 - Ferreira, Teresa A1 - Gustafsson, Stefan A1 - Kutalik, Zoltán A1 - Luan, Jian'an A1 - Mägi, Reedik A1 - Randall, Joshua C A1 - Winkler, Thomas W A1 - Andrew R Wood A1 - Workalemahu, Tsegaselassie A1 - Jessica Faul A1 - Jennifer A. Smith A1 - Jing Hua Zhao A1 - Wei Zhao A1 - Chen, Jin A1 - Rudolf Fehrmann A1 - Hedman, Åsa K A1 - Karjalainen, Juha A1 - Schmidt, Ellen M A1 - Absher, Devin A1 - Amin, Najaf A1 - Anderson, Denise A1 - Beekman, Marian A1 - Bolton, Jennifer L A1 - Bragg-Gresham, Jennifer L A1 - Buyske, Steven A1 - Demirkan, Ayse A1 - Deng, Guohong A1 - Georg Ehret A1 - Feenstra, Bjarke A1 - Feitosa, Mary F A1 - Fischer, Krista A1 - Goel, Anuj A1 - Gong, Jian A1 - Jackson, Anne U A1 - Kanoni, Stavroula A1 - Kleber, Marcus E A1 - Kristiansson, Kati A1 - Lim, Unhee A1 - Lotay, Vaneet A1 - Mangino, Massimo A1 - Mateo Leach, Irene A1 - Medina-Gomez, Carolina A1 - Sarah E. Medland A1 - Michael A. Nalls A1 - Palmer, Cameron D A1 - Pasko, Dorota A1 - Pechlivanis, Sonali A1 - Peters, Marjolein J A1 - Prokopenko, Inga A1 - Shungin, Dmitry A1 - Stančáková, Alena A1 - Strawbridge, Rona J A1 - Yun Ju Sung A1 - Toshiko Tanaka A1 - Teumer, Alexander A1 - Trompet, Stella A1 - van der Laan, Sander W A1 - van Setten, Jessica A1 - Jana V. van Vliet-Ostaptchouk A1 - Wang, Zhaoming A1 - Yengo, Loic A1 - Zhang, Weihua A1 - Isaacs, Aaron A1 - Albrecht, Eva A1 - Ärnlöv, Johan A1 - Arscott, Gillian M A1 - Attwood, Antony P A1 - Bandinelli, Stefania A1 - Barrett, Amy A1 - Bas, Isabelita N A1 - Bellis, Claire A1 - Bennett, Amanda J A1 - Berne, Christian A1 - Blagieva, Roza A1 - Blüher, Matthias A1 - Böhringer, Stefan A1 - Bonnycastle, Lori L A1 - Böttcher, Yvonne A1 - Boyd, Heather A A1 - Bruinenberg, Marcel A1 - Caspersen, Ida H A1 - Yii-Der I Chen A1 - Robert Clark A1 - Daw, E Warwick A1 - de Craen, Anton J M A1 - Delgado, Graciela A1 - Dimitriou, Maria A1 - Doney, Alex S F A1 - Eklund, Niina A1 - Estrada, Karol A1 - Eury, Elodie A1 - Folkersen, Lasse A1 - Fraser, Ross M A1 - Melissa E Garcia A1 - Geller, Frank A1 - Giedraitis, Vilmantas A1 - Gigante, Bruna A1 - Alan S Go A1 - Golay, Alain A1 - Goodall, Alison H A1 - Gordon, Scott D A1 - Gorski, Mathias A1 - Grabe, Hans-Jörgen A1 - Grallert, Harald A1 - Grammer, Tanja B A1 - Gräßler, Jürgen A1 - Grönberg, Henrik A1 - Groves, Christopher J A1 - Gusto, Gaëlle A1 - Jeffrey Haessler A1 - Hall, Per A1 - Haller, Toomas A1 - Hallmans, Göran A1 - Catharina A Hartman A1 - Hassinen, Maija A1 - Hayward, Caroline A1 - Heard-Costa, Nancy L A1 - Helmer, Quinta A1 - Hengstenberg, Christian A1 - Oddgeir Holmen A1 - Jouke-Jan Hottenga A1 - James, Alan L A1 - Jeff, Janina M A1 - Johansson, Åsa A1 - Jolley, Jennifer A1 - Juliusdottir, Thorhildur A1 - Kinnunen, Leena A1 - Koenig, Wolfgang A1 - Koskenvuo, Markku A1 - Kratzer, Wolfgang A1 - Laitinen, Jaana A1 - Lamina, Claudia A1 - Leander, Karin A1 - Lee, Nanette R A1 - Lichtner, Peter A1 - Lars Lind A1 - Lindström, Jaana A1 - Ken S Lo A1 - Lobbens, Stéphane A1 - Lorbeer, Roberto A1 - Lu, Yingchang A1 - Mach, François A1 - Patrik K. 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Nolte A1 - Pilz, Stefan A1 - Rayner, Nigel W A1 - Renstrom, Frida A1 - Rettig, Rainer A1 - Ried, Janina S A1 - Ripke, Stephan A1 - Neil R Robertson A1 - Rose, Lynda M A1 - Sanna, Serena A1 - Scharnagl, Hubert A1 - Scholtens, Salome A1 - Schumacher, Fredrick R A1 - Scott, William R A1 - Seufferlein, Thomas A1 - Jianxin Shi A1 - Albert Vernon Smith A1 - Smolonska, Joanna A1 - Stanton, Alice V A1 - Steinthorsdottir, Valgerdur A1 - Kathleen Stirrups A1 - Stringham, Heather M A1 - Sundström, Johan A1 - Swertz, Morris A A1 - Swift, Amy J A1 - Syvänen, Ann-Christine A1 - Tan, Sian-Tsung A1 - Bamidele Tayo A1 - Thorand, Barbara A1 - Thorleifsson, Gudmar A1 - Tyrer, Jonathan P A1 - Uh, Hae-Won A1 - Vandenput, Liesbeth A1 - Verhulst, Frank C A1 - Vermeulen, Sita H A1 - Verweij, Niek A1 - Vonk, Judith M A1 - Lindsay L Waite A1 - Warren, Helen R A1 - Dawn Waterworth A1 - Michael N Weedon A1 - Wilkens, Lynne R A1 - Willenborg, Christina A1 - Wilsgaard, Tom A1 - Wojczynski, Mary K A1 - Wong, Andrew A1 - Wright, Alan F A1 - Zhang, Qunyuan A1 - Brennan, Eoin P A1 - Murim Choi A1 - Dastani, Zari A1 - Alexander Drong A1 - Eriksson, Per A1 - Franco-Cereceda, Anders A1 - Gådin, Jesper R A1 - Gharavi, Ali G A1 - Goddard, Michael E A1 - Handsaker, Robert E A1 - Huang, Jinyan A1 - Karpe, Fredrik A1 - Kathiresan, Sekar A1 - Keildson, Sarah A1 - Kiryluk, Krzysztof A1 - Kubo, Michiaki A1 - Lee, Jong-Young A1 - Liang, Liming A1 - Lifton, Richard P A1 - Ma, Baoshan A1 - McCarroll, Steven A A1 - McKnight, Amy J A1 - Min, Josine L A1 - Moffatt, Miriam F A1 - Grant W. Montgomery A1 - Joanne M. Murabito A1 - Nicholson, George A1 - Nyholt, Dale R A1 - Okada, Yukinori A1 - Perry, John R B A1 - Dorajoo, Rajkumar A1 - Reinmaa, Eva A1 - Salem, Rany M A1 - Sandholm, Niina A1 - Scott, Robert A A1 - Stolk, Lisette A1 - Takahashi, Atsushi A1 - Tanaka, Toshihiro A1 - Van't Hooft, Ferdinand M A1 - Anna A E Vinkhuyzen A1 - Westra, Harm-Jan A1 - Wei Zhang A1 - Krina T. Zondervan A1 - Heath, Andrew C A1 - Arveiler, Dominique A1 - Bakker, Stephan J L A1 - Beilby, John A1 - Bergman, Richard N A1 - Blangero, John A1 - Bovet, Pascal A1 - Campbell, Harry A1 - Caulfield, Mark J A1 - Cesana, Giancarlo A1 - Chakravarti, Aravinda A1 - Chasman, Daniel I A1 - Chines, Peter S A1 - Collins, Francis S A1 - Crawford, Dana C A1 - Cupples, L Adrienne A1 - Cusi, Daniele A1 - Danesh, John A1 - de Faire, Ulf A1 - Hester M Ruijter A1 - Dominiczak, Anna F A1 - Erbel, Raimund A1 - Erdmann, Jeanette A1 - Johan G Eriksson A1 - Farrall, Martin A1 - Felix, Stephan B A1 - Ferrannini, Ele A1 - Ferrières, Jean A1 - Ford, Ian A1 - Forouhi, Nita G A1 - Forrester, Terrence A1 - Franco, Oscar H A1 - Gansevoort, Ron T A1 - Gejman, Pablo V A1 - Gieger, Christian A1 - Gottesman, Omri A1 - Gudnason, Vilmundur A1 - Gyllensten, Ulf A1 - Hall, Alistair S A1 - Tamara B Harris A1 - Hattersley, Andrew T A1 - Hicks, Andrew A A1 - Hindorff, Lucia A A1 - Hingorani, Aroon D A1 - Hofman, Albert A1 - Homuth, Georg A1 - Hovingh, G Kees A1 - Humphries, Steve E A1 - Hunt, Steven C A1 - Hyppönen, Elina A1 - Illig, Thomas A1 - Jacobs, Kevin B A1 - Järvelin, Marjo-Riitta A1 - Jöckel, Karl-Heinz A1 - Johansen, Berit A1 - Jousilahti, Pekka A1 - Jukema, J Wouter A1 - Jula, Antti M A1 - Kaprio, Jaakko A1 - Kastelein, John J P A1 - Keinanen-Kiukaanniemi, Sirkka M A1 - Lambertus A Kiemeney A1 - Knekt, Paul A1 - Kooner, Jaspal S A1 - Kooperberg, Charles A1 - Kovacs, Peter A1 - Kraja, Aldi T A1 - Kumari, Meena A1 - Kuusisto, Johanna A1 - Lakka, Timo A A1 - Langenberg, Claudia A1 - Le Marchand, Loic A1 - Lehtimäki, Terho A1 - Lyssenko, Valeriya A1 - Männistö, Satu A1 - Marette, André A1 - Matise, Tara C A1 - McKenzie, Colin A A1 - McKnight, Barbara A1 - Moll, Frans L A1 - Morris, Andrew D A1 - Morris, Andrew P A1 - Murray, Jeffrey C A1 - Nelis, Mari A1 - Ohlsson, Claes A1 - Oldehinkel, Albertine J A1 - Ong, Ken K A1 - Pamela A Madden A1 - Pasterkamp, Gerard A1 - Peden, John F A1 - Peters, Annette A1 - Postma, Dirkje S A1 - Pramstaller, Peter P A1 - Price, Jackie F A1 - Qi, Lu A1 - Olli T Raitakari A1 - Rankinen, Tuomo A1 - Rao, D C A1 - Rice, Treva K A1 - Ridker, Paul M A1 - Rioux, John D A1 - Ritchie, Marylyn D A1 - Rudan, Igor A1 - Veikko Salomaa A1 - Nilesh J Samani A1 - Saramies, Jouko A1 - Sarzynski, Mark A A1 - Schunkert, Heribert A1 - Schwarz, Peter E H A1 - Sever, Peter A1 - Shuldiner, Alan R A1 - Sinisalo, Juha A1 - Stolk, Ronald P A1 - Strauch, Konstantin A1 - Tönjes, Anke A1 - Trégouët, David-Alexandre A1 - Tremblay, Angelo A1 - Tremoli, Elena A1 - Virtamo, Jarmo A1 - Vohl, Marie-Claude A1 - Völker, Uwe A1 - Waeber, Gérard A1 - Gonneke Willemsen A1 - Witteman, Jacqueline C A1 - Zillikens, M Carola A1 - Adair, Linda S A1 - Amouyel, Philippe A1 - Asselbergs, Folkert W A1 - Assimes, Themistocles L A1 - Bochud, Murielle A1 - Boehm, Bernhard O A1 - Boerwinkle, Eric A1 - Bornstein, Stefan R A1 - Erwin P. Bottinger A1 - Bouchard, Claude A1 - Cauchi, Stéphane A1 - Chambers, John C A1 - Chanock, Stephen J A1 - Cooper, Richard S A1 - de Bakker, Paul I W A1 - George Dedoussis A1 - Luigi Ferrucci A1 - Franks, Paul W A1 - Froguel, Philippe A1 - Groop, Leif C A1 - Haiman, Christopher A A1 - Hamsten, Anders A1 - Hui, Jennie A1 - Hunter, David J A1 - Hveem, Kristian A1 - Kaplan, Robert C A1 - Mika Kivimaki A1 - Kuh, Diana A1 - Laakso, Markku A1 - Liu, Yongmei A1 - Nicholas G. Martin A1 - März, Winfried A1 - Melbye, Mads A1 - Andres Metspalu A1 - Moebus, Susanne A1 - Munroe, Patricia B A1 - Njølstad, Inger A1 - Ben A Oostra A1 - Palmer, Colin N A A1 - Nancy L. Pedersen A1 - Markus Perola A1 - Pérusse, Louis A1 - Peters, Ulrike A1 - Power, Chris A1 - Quertermous, Thomas A1 - Rauramaa, Rainer A1 - Fernando Rivadeneira A1 - Saaristo, Timo E A1 - Saleheen, Danish A1 - Sattar, Naveed A1 - Schadt, Eric E A1 - Schlessinger, David A1 - Eline P. Slagboom A1 - Snieder, Harold A1 - Tim D Spector A1 - Thorsteinsdottir, Unnur A1 - Stumvoll, Michael A1 - Tuomilehto, Jaakko A1 - André G Uitterlinden A1 - Uusitupa, Matti A1 - van der Harst, Pim A1 - Walker, Mark A1 - Wallaschofski, Henri A1 - Wareham, Nicholas J A1 - Watkins, Hugh A1 - David Weir A1 - Wichmann, H-Erich A1 - Wilson, James F A1 - Zanen, Pieter A1 - Ingrid B. Borecki A1 - Deloukas, Panos A1 - Fox, Caroline S A1 - Heid, Iris M A1 - O'Connell, Jeffrey R A1 - Strachan, David P A1 - Stefansson, Kari A1 - Cornelia M van Duijn A1 - Gonçalo Abecasis A1 - Lude L. Franke A1 - Timothy M Frayling A1 - McCarthy, Mark I A1 - Peter M. Visscher A1 - Scherag, Andre A1 - Willer, Cristen J A1 - Boehnke, Michael A1 - Mohlke, Karen L A1 - Lindgren, Cecilia M A1 - Beckmann, Jacques S A1 - Barroso, Inês A1 - North, Kari E A1 - Ingelsson, Erik A1 - Joel Hirschhorn A1 - Ruth J F Loos A1 - Speliotes, Elizabeth K KW - Age Factors KW - BMI KW - Continental Population Groups KW - Energy Metabolism KW - Europe KW - Female KW - Genome-Wide Association Study KW - Glutamic Acid KW - Humans KW - Insulin KW - Male KW - Obesity KW - Polymorphism, Single Nucleotide KW - Quantitative Trait Loci KW - Synapses AB -Obesity is heritable and predisposes to many diseases. To understand the genetic basis of obesity better, here we conduct a genome-wide association study and Metabochip meta-analysis of body mass index (BMI), a measure commonly used to define obesity and assess adiposity, in up to 339,224 individuals. This analysis identifies 97 BMI-associated loci (P < 5 × 10(-8)), 56 of which are novel. Five loci demonstrate clear evidence of several independent association signals, and many loci have significant effects on other metabolic phenotypes. The 97 loci account for ∼2.7% of BMI variation, and genome-wide estimates suggest that common variation accounts for >20% of BMI variation. Pathway analyses provide strong support for a role of the central nervous system in obesity susceptibility and implicate new genes and pathways, including those related to synaptic function, glutamate signalling, insulin secretion/action, energy metabolism, lipid biology and adipogenesis.

VL - 518 IS - 7538 U1 - http://www.ncbi.nlm.nih.gov/pubmed/25673413?dopt=Abstract ER -