It has been shown that one of the causes of obesity is the variation of the so called obesity gene which may increase the risk of obesity by over 20 %. (fullhealthsecrets.com)
«This represents proof of the principle that you can identify candidate obesity genes by the study of rodents,» he says. (sciencemag.org)
Several obesity genes have been documented in the past, but they each have only a small effect on weight. (newscientist.com)