Two key studies have identified the role that melatonin plays in reducing the risk of a positive test for COVID-19 and lowering the incidence of severe symptoms. That new finding adds to a list of benefits linked to melatonin since it was first discovered in 1958 by Dr. Aaron Lerner, a dermatologist who was able to isolate it from the pineal gland in a cow. Scientists began studying melatonin in the 1980s, and by the 1990s, it received more attention. Research data showed that melatonin influences a number of bodily processes, including calcium-dependent metabolism, immune modulation, and tumor growth—which it can restrain. Although melatonin is produced in a variety of tissues, the major source is the pineal gland, a tiny endocrine gland found in the center of the brain. One of melatonin’s initial functions is likely as a free radical scavenger. Interestingly, melatonin also functions in plants to reduce oxidative …