I work in a restaurant kitchen with no AC. On hot days it can be over 100 and that is without standing in front of the fryer/melter/stove.
I then crave weird foods and pour so much salt on my food that you'd think I was insane.
Depression and anxiety are biggies for me. I didn't realize the connection until I started increasing potassium/sodium/magnesium after low-carbing. Go to Evolutionary Psychiatry for more