2 doctors weighed in:
Went to class reunion this weekend. So many people had gained so much weight over the past year and they were thin most their lives what is happening?
2 doctors weighed in

Dr. Janet Greenhut
Preventive Medicine
1 doctor agrees
In brief: Food is everywhere
And it's inexpensive.
As a species we haven't adapted to the easy availability of food. We're programmed to eat as much as we can today in case there's a famine tomorrow. The trouble is that the famine never comes. Combine that with the fact that our metabolism slows down as we age and we tend to be less physically active, the result is weight gain.

In brief: Food is everywhere
And it's inexpensive.
As a species we haven't adapted to the easy availability of food. We're programmed to eat as much as we can today in case there's a famine tomorrow. The trouble is that the famine never comes. Combine that with the fact that our metabolism slows down as we age and we tend to be less physically active, the result is weight gain.
Dr. Janet Greenhut
Dr. Janet Greenhut
Thank
Get help from a real doctor now
Dr. Jack Hinkle
Board Certified,
384K people helped
Continue
107,000 doctors available
Read more answers from doctors