Q. I have a friend who has asked me to search the Internet for information about "penal or penel cysts," located in the brain or head area. I have had no luck. Could you help?

The pineal gland, often called the “third eye,” is vital to our health and well-being. Nestled deep within the brain, this small endocrine gland produces melatonin, a hormone that regulates sleep ...

THE existence of an active substance in the pineal gland capable of inhibiting gonadotropic hormones is supported by most authors who have studied this problem. On the other hand, nothing has been ...

THE purpose of this review is to summarize the known functions of the pineal gland. Then, utilizing recent evidence linking the visual and limbic systems, a hypothesis will be advanced concerning ...