There are two particular adrenal hormones called cortisol and epinephrine that are released during stress. “Cortisol is a glucocorticosteroid which has numerous effects in our body,” explains Dr. Mona Morstein. “Since it is designed to be secreted in our fight or flight situations, when we need to mobilize energy, cortisol signals the liver to create more glucose, that is, blood sugar.” Dr. Morstein continues to discuss that it is rare that we are facing something that makes us need to run for our lives, so we do not use this glucose for muscle burning. So, when this happens constantly while stressed, we need to have more insulin to deal with that glucose secretion. Insulin takes glucose into our cells and turns it to fat, causing weight gain.