I still believe that we are all born with “set points” where our weight is most stable. Some of us have higher set points, and others are very low.
My cholesterol is low, my BP is low, no diabetes, and I eat well. I may be big, but I’m healthier than some men half my size.
Weight isn’t really a good measure. How do those pants feel? If they’re too tight, that’s a good indication that you’re slipping. Wish I’d paid more attention to mine.
I think you’re right. Sadly, that “set point” rises as we age. Now I’m in my mid 40s, my body seems absolutely determined to be 150 or so. And I’m absolutely determined that it will be 130. We are fighting it out and it is not pretty. It’s like having a conjoined twin with a mental illness.