8. cancer cells produce their own hormones that trick the body into feeding cancer cells rather than healthy cells. fat reproductive growth speed

Melatonin is a powerful antioxidant and free radical scavenger that helps 'cool down' excess inflammation. In fact, melatonin is so integral to the health of your immune system that a lack of it causes your thymus gland, a key component of your immune system, to shrink in size.1 Because melatonin is a strong antioxidant and is able to cross the blood-brain barrier, it is thought to help protect against Alzheimer's disease as well as brain aging.

In one study, artificially aged mice treated with melatonin had reduced oxidative stress and markers of cerebral aging and neurodegeneration, indicating the melatonin offered both neuroprotective and anti-aging effects.2 In another study, researchers revealed that combining daily exercise with the daily intake of melatonin appeared to have a synergistic effect against brain deterioration in mice with Alzheimer's disease-associated mutations.3 Improvements in behavior, learning and memory were noted. Melatonin's immediate precursor is the neurotransmitter serotonin, which is a major player in regulating and giving a lift to your mood. And, like serotonin, melatonin plays important roles in your physical and mental health. Studies have shown that insufficient melatonin production can set you up for:

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).