Skip to content

    Children's Health

    Font Size
    A
    A
    A

    Adult Obesity May Be All in the Family

    Study: Early Family Life Sets Lifelong Ideas About What’s a ‘Normal’ Weight
    By
    WebMD Health News
    Reviewed by Louise Chang, MD

    Dec. 15, 2011 -- A few years back, a study made headlines by suggesting that weight gain is socially contagious and that people often catch it from their friends.

    Now, new research finds that these social interactions may have little impact on body weight, and that early-life family dietary habits and ideas about weight are much more important predictors of adult obesity.

    Before making any final decisions, though, one professor doesn’t put too much stock in either study and says more research is needed.

    Still, researcher Heather W. Brown, PhD, of Newcastle University in the U.K., says even after taking into account the impact of shared genes, her research suggests that early-life influences such as family eating habits play a big role in adult weight.

    “Friends don’t appear to impact weight much, unless they happen to live in the same household,” she tells WebMD. “From a public policy point of view, this suggests that efforts to prevent obesity won’t have much of an effect if they target social networks.”

    Weight Gain Contagious? Maybe Not

    In 2007, researchers at Harvard University and the University of California, San Diego, first suggested that obesity may be passed like a virus from person to person via social networks, based on their analysis of research on more than 12,000 participants who were followed for 32 years.

    They found that friends and even friends of friends were likely to have similar rates of obesity.

    The fact that the association was not as strong in neighbors who did not socially interact suggested that shared environment was not the cause.

    In their new study, Brown and co-author Jennifer Roberts, of the University of Sheffield, developed their own mathematical model using adult and adolescent sibling data in an effort to better understand the role of genetic predisposition and habits formed during childhood on adult body weight.

    They concluded that these influences were far more important predictors of body weight than changeable factors like who was in someone’s circle of friends.

    These changeable factors were found to be important only for adolescent siblings still sharing a home.

    Today on WebMD

    child with red rash on cheeks
    What’s that rash?
    plate of fruit and veggies
    How healthy is your child’s diet?
     
    smiling baby
    Treating diarrhea, fever and more.
    Middle school band practice
    Understanding your child’s changing body.
     

    worried kid
    fitArticle
    jennifer aniston
    Slideshow
     
    Measles virus
    Article
    sick child
    Slideshow
     

    babyapp
    New
    Child with adhd
    Slideshow
     
    rl with friends
    fitSlideshow
    Child Coughing or Sneezing into Elbow
    Article