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Obesity Gene Testing may Help to Reduce Self-Blame

by Bidita Debnath on September 5, 2013 at 11:18 PM
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 Obesity Gene Testing may Help to Reduce Self-Blame

A new study by researchers from the Health Behaviour Research Centre at UCL (University College London) suggests that obesity gene testing does not put people off weight loss and may help to reduce self-blame.

Previous studies have shown that genes play a role in a person's risk of becoming overweight. One gene, called FTO, has been found to have the biggest influence so far.

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FTO has two variants, one associated with greater risk of weight gain (A) and one associated with lower risk (T). One in two people carries at least one copy of the A variant. People who inherit two A variants (one from their mother and one from their father) are 70% more likely to become obese than those with two T variants. Even those who inherit one have a higher weight than those with two T variants.

Researchers can now use a gene test for FTO (although this is not yet commercially available). However, it was not known how people would react to finding out the results of the genetic test.
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Some clinicians thought it would help people to become motivated to manage their weight. Others thought that the 'genes as destiny' perspective might mean people felt there was nothing they could do about their weight. If people responded fatalistically it could be harmful because diet and exercise are still very important for health and weight control, perhaps even more so if a person is 'battling against their biology'.

UCL's Professor Jane Wardle and Susanne Meisel decided to test a small number of volunteers (18) for their FTO status and interview them about their experience. The sample of volunteers included men and women, who spanned the weight range from underweight to obese.

They found that the volunteers were very enthusiastic about receiving their genetic test result. Those who struggled with their weight said that the genetic test result was helpful because it removed some of the emotional stress attached to weight control and relieved some of the stigma and self-blame

No one reported a negative reaction to the genetic test result, or said it made them feel there was nothing they could do to about their weight.

Susanne Meisel, who led the study said: "These results are encouraging. Regardless of gene status or weight, all the volunteers recognised that both genes and behaviour are important for weight control. The results indicate that people are unlikely to believe that genes are destiny and stop engaging with weight control once they know their FTO status. Although they knew that FTO's effect is only small, they found it motivating and informative. We are now doing a larger study to confirm whether more people react in the same way."

Dr Laura McGowan, Executive Director of the charity Weight Concern added: "The causes of obesity are multiple and complex, and this research is encouraging for those who struggle with their weight. Although we know genetics play a part in weight, people can learn strategies to deal with this increased risk for weight gain, so finding out you carry the high-risk version of the gene shouldn't mean you surrender to fate."

Source: Eurekalert
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