Gaining weight? Look to your friends, new study finds

Friday, July 20th, 2012. Filed under: Health & Fitness Lifestyle

A new study finds that your social network can influence your weight, diet, and exercise habits. ©Maksim Toome/shutterstock.com

(Relaxnews) – Are your friends sporty and healthy eaters, or more of a beer and pizza crowd? A new study out of the US finds that the answer could provide some insight into the current state of your body.

To conduct the study, David Shoham and his team at Loyola University Chicago Stritch School of Medicine examined data from two large suburban high schools that participated in the National Longitudinal Study of Adolescent Health in 1994 and 1995.

Over the course of two years, the students were surveyed about their weight, friendships, sports activities and television and computer time. Researchers also calculated each student’s body mass index (BMI).

The results, published in the journal PLoS ONE last month, found that students were more likely to gain weight if they had friends who were heavier than they were. The converse was also true: students were more likely to lose weight — or gain weight at a slower pace — if they had a slimmer groups of friends.

Findings suggest that your friends may influence your lifestyle decisions both directly and indirectly, according to the researchers. Directly, your friends may nudge you toward say, going for a bike ride or trying a new yoga class, or conversely, sharing a triple fudge sundae. Indirectly, your friends could influence what you regard as appropriate body size and eating and exercise habits.

A separate study published in the same journal in February finds that women tend to mimic the eating behaviors of their friends, bite for bite, when dining out.

A 2007 study published in The New England Journal of Medicine also found that both obesity and thinness were socially contagious and influenced the social network’s body weight: if one person is obese, odds that his or her friends will also become obese increases by 50 percent, the study found.

Share Button

Related posts

Give weight-loss efforts a boost with ‘negative-calorie’ foodsThe most popular nutrition trends of 2015Vitamin D levels should be boosted for intense sporting activity to avoid fracturesPomegranates have an anti-aging effect and are good for our neuronsThe 10 best slimming fruits and vegetablesCameron Diaz to release book on health and nutritionUS moms doing less housework, watching more TV: studyFive worst celebrity diets to avoid in the New YearWorking out with friends is more fun: studyTo help kids shed weight, change up the family routine: studyTop health/fitness apps: Zero Stress, HRV4 TrainingWhen stressed, people lean on habits, good or badHealthy living can fend off forgetfulness: studyJessica Alba credits her perfect body to fruit, water, and a corsetSweet treats for a healthier dietBoost both body and brain with chocolate say two new studiesFrom blood type to paleo: a look at some of the most popular dietsCut the calories when eating out in different types of restaurantThe science of eating – new ideas for a healthier 2016How to boost your immune system when the temperature drops