Factors influencing obesity
There is a number of physiological theories of obesity. One of them is linked to genetic predisposition. It seems that body size runs in families. Having one obese parent results in a 40 percent chance of becoming obese, and having two obese parents increases the likelihood of becoming obese to 80 percent. According to Garn et al. (1981), the chances of thin parents having an overweight child is about 7 percent.