Jeffrey Friedman, molecular biologist, head of the genetics lab at Rockefeller U, leader of the team that discovered Leptin – aka ‘biology rock star’ – pointed out once that the ‘obesity epidemic’ was greatly centered in certain ethnic subgroups. He pointed out that they had people in a metabolic ward who had gastric bypass and then were given 700 calories a day and they stopped losing weight after awhile even though they were still very obese – clearly, he said, there is something different metabolically.
So if you’re of a race likely to be fat, ‘experts’ may insist you gut your child, screw up their nutrient absorption and more for life. If you’re of a race likely to be thin, never mind it’s all good. The kid may be diabetic but hey, that falls out of the stars on people.
It so happens that most North America native american groups, the celts, and a lot of the african groups, get incredibly fat on this “ingestible entertainment” aka food supply. Some other groups don’t so much.