Melatonin is a naturally occurring hormone produced in the brain’s pineal gland that regulates our ... and the like. Ashwagandha is an adaptogen, an herb that helps regulate the stress hormone ...

Zebrafish are known to detect color and brightness with the pineal gland, which is part of the brain. How they do so is now being elucidated. We see color because photoreceptor cones in our eyes ...