Food to Avoid: Coffee and Caffeinated Drinks
Some people drink coffee and other beverages that contain caffeine (tea, cola, and hot chocolate) to help boost their energy levels. The problem is that caffeine has been shown to inhibit levels of serotonin in the brain, and, when serotonin levels are suppressed, you can become depressed and feel irritable. Caffeine is also a diuretic — it makes you go to the bathroom more often. Even mild dehydration can cause depression. Caffeine also can keep you awake, leading to stress and anxiety. Remember that you need to sleep well to be in a positive mood.