Native Americans served in World War I even though they were not citizens of the United States. In fact, it was not until after World War II in the 1965 passage of the Voting Rights Act that all states were required to allow Native Americans to vote on the same basis as any other American.
Overview. Melatonin is a hormone secreted by the pineal gland in the brain. It helps regulate other hormones and maintains the body's circadian rhythm. The circadian rhythm is an internal 24-hour clock that plays a critical role in when we fall asleep and when we wake up. When it is dark, your body produces more melatonin.
Occasionally, melatonin is used as a complementary medicine in cancer treatment for breast, brain, lung, prostate, head and neck, or gastrointestinal cancer. Melatonin is sometimes used to mitigate the side effects of chemotherapy including weight loss, nerve pain, weakness and a condition called thrombocytopenia.elatonin supplements are also recommended for sleep disorders due to side effects from beta-blockers (blood pressure medication), from stopping benzodiazepine drugs or from quitting smoking. Melatonin may also be given for insomnia linked to attention deficit-hyperactivity disorder (ADHD) and autism in children.