Location of the pineal gland
The pineal gland is located near the centre of the brain. It is a small gland (5-8mm in size) and is shaped like a pinecone (giving this gland its name).
Functions/Roles of the pineal gland
The main function of the pineal gland is to make melatonin, which sets the rhythm of many biological systems.
Keeping melatonin levels in balance
Melatonin levels change across the day in response to changes in daylight. More melatonin is made during periods of darkness (e.g. night), while less is produced during light periods (e.g. day). This means that melatonin levels usually change in a daily (circadian) and seasonal rhythm.
Common Problems / Disorders of the Pineal Gland
Circadian Rhythm Sleep Disorders
Excess Melatonin Supplementation
Page last reviewed on 2 Mar 2023