3.Trigger: Low Vitamin B12
If you’re feeling lethargic or depressed, too little vitamin B12 may be to blame. If you’re older, you’re more at risk for the B12 blues because you may not have enough stomach acid to release B12 from food.
4.Trigger: Achy Joints
Living with a condition that causes chronic pain, such as rheumatoid arthritis or osteoarthritis, increases the chance of having depression. In fact, people with chronic pain are three times as likely to have depression or an anxiety disorder. And depression can make pain worse.