Obesity 'may be largely genetic'

[Tink]

My thinking is that we can understand a lot about genetics by simply looking at different breeds of the same species. Look at Greyhounds... Very slim and sleek. Then look at the Saint Bernard... big and bulky, or the Rottweiler... short, broad, and muscular. They all have an expected body type based on the genes they've gotten from their parents. If we were to try to judge all dogs based on one or 2 breeds, most would fall short. We'd either think of greyhounds as anorexic or rotties and St Bernard's as fat! So because we expect them to be different and actually designed them to fit a specific purpose, we accept their body types as normal.

So what do you think of when you think of Vikings? Broad, blonde, fair skinned... Or Asians? Petite, with black hair and small features... So why is it so hard to accept that our genetic make-up plays a major role in our body type?
Judy might be a greyhound... and I'm a rottie. LOL

So what are you?