Health

will do that to everybody as they age.

(Looking in the mirror at myself proves the point.)

Seems to me that people eat more than they need to try to keep their energy levels up as it was in younger years as they age.
Doesn't work.
Your muscles get less, the fat gets more.
Your weight might remain stable, but it's happening.

(Looking in the mirror at myself proves the point. Must stop doing this. lol)

Truth is, short people who have been skinny all their lives live longer and have fewer health problems in their 90's.
Go look at your local nursing home for proof.