For those battling weight gain, there is an interesting article on that in the February issue of Psychology Today, that you can buy at any news stand.
It is under Food Chain, A Clockwork Orange ...or Pork Chops, by Lina Zeldovich.
I could not find it online yet, so you have to get the magazine.
It gives advice on when to eat and why and more.
I think some of it could help those with weight gain problems to fine tune their efforts.