There is no doubt that obesity is primarily caused by poor eating habits and inactive lifestyle. But a meta-analysis of several obesity studies found that six new obesity genes are expressed in the brain.
Scientists from the international GIANT (Genetic Investigation of Anthropometric Parameters) consortium analyzed data from 15 genome-wide association studies and identified six new candidate genes that were related to regulation of body weight. Several of these new genes are highly expressed or known to act in the brain, emphasizing the role of the central nervous system in predisposition to obesity.
UPDATE: Endurance Geek made me rethink …read more