According to a recent UCLA study, dieting can cause chronic stress! The problem? Not getting enough of vitamins B6, B12 and folate -nutrients that affect mood. Too little of these can make you prone to depression and mood swings, explains Marlene Schwartz, Ph.D of the Yale Center for Eating and Weight Disorders.

AHA! So that explains Maryam’s attitude every time she decides to go on a diet!