By Yvaine Ye
Many people have thin friends who claim not to gain weight even if they eat unhealthy. They may not be lying. Several pieces of DNA are badociated with lower body weight, suggesting a genetic basis for thinness. The findings also suggest that thinness may be hereditary.
Previous research has suggested that about 40 to 70 percent of the variation in our body weight can be explained by genetics. Scientists have discovered a link between genes and obesity, so Sadaf Farooqi at the University of …