In humans or animals? If in animals, which species?

Tocial networks and friendships are very important to everyone's well being. So having fewer friends impacts on perceptions of self-worth and general well-being. An easy way for some people to comfort themselves is to enjoy foods they like... and gain weight. This can then become a cycle of weight gain, resulting in more isolation and more comfort eating. The psycho-social aspects are important here.

in BALB/c mice

Sorry the mice part of the question did not appear!

I gues they have fewer self-worth issues than humans.

there is no competion in food, drinking water, oxygen etc, it might be stressful for mice