Importance of a healthy Pineal Gland & holistic health

The pineal gland is a small endocrine gland in the vertebrate brain, found in bony fish, amphibians, reptiles and mammals. In humans it is usually called the pineal body or simply pineal gland.
It is considered the 'third eye' or 'mind's eye' in Eastern philosophical and religious traditions because of its resemblance to the human pineal gland. The pinecone-like shape of a young pineal gland has long been associated by many cultures with spiritual symbolism.

In humans, the pineal gland is about 1 cm long and located near the center of the brain between the two hemispheres. It produces serotonin derivative melatonin, a hormone that affects circadian rhythms.
This gland also secretes the neurosteroid DMT (Dimethyltryptamine) which is involved in the production of human consciousness. It is said that a lack of pineal secretion can cause schizophrenia when it occurs during critical stages of early brain development.

A third important function of the pineal gland is to produce a hormone called melatonin, which helps control the sleep-wake cycle. This makes sense because, in humans at least, the pineal gland is located near structures that are involved in regulating brain activity during waking and sleeping.
The pineal gland is part of the epithalamus. It lies in the midline of the brain, with a part in front and between (interpeduncular fossa) two thalamic bodies, behind and below the cerebellum.