yes some people have genetic defects that make them fat….it is a small percentage…normally obesity is caused by life style choices. One example of gene defects is that some people cannot produce an hormone called leptin that tells the brain to send the signals to stop eating after a meal…and so they get obese. Scientist have discovered this and now can give people this hormone by injection and these people loose wait slowly and have a normal life!! isn’t it great?
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