Originally Posted by shake

Fat weight gain is always a result of consuming more calories than burned. Some things can effect the ratio (maybe the gut microbiome will effect the ratio slightly), but it's still always an equation.

For an average size man, something like this:

If you eat nothing but 1,200 calories of donuts a day, you'll loose weight.

If you eat nothing but 4,000 calories of the healthiest food around, you'll gain weight.

So many studies and bullshit on things that might change those numbers ever so slightly.

It's easy: eat less or exercise more and loose weight.