Melatonin
This antioxidant hormone is produced by the brain’s pineal gland during sleep and helps maintain the body’s natural biorhythm. Melatonin may also help retard the aging process, especially by preventing the oxidative damage to brain cells that are associated with Alzheimer’s and other conditions. Cluster headaches may be alleviated by melatonin, and it has the ability to boost the immune system’s ability to stop tumors from spreading. Melatonin is found in tomatoes and other vegetables, and is available as a supplement. As we age, the body produces less and less melatonin, so for a lot of people over forty, a melatonin supplement is a good idea.