Katherine

The mechanism you are describing about fat cells refilling vs making new cells, does not make sense. They have done studies, and the number of fat cells remain constant during adulthood, unless you undergo liposuction or other procedures. I think what you are describing is a set point weight, where your body tries (via hormones I think) to maintain its preferred weight. So its more a metabolism effect rather than physical space issue about storing fat.

I doubt they took into account the emissions and other climate effects due to the animal agriculture they will be supporting.