Not to worry. This is just one of the basic survival mechanisms that God gave all of his creatures. It should only remind us that famine follows feast... and it always does.
Especially when nobody tells those feasting to slow down. Ultimately, if even only financially (health care costs), we're in this together.
And if we have to call people fat in order to get them to eat properly and exercise, why not do it? I'm myself fat, I've looked in the mirror, I don't like it, others don't like it, I see how fat looks on others and it's gross, so I'm working on fixing it, even if it hurts in the short term.