How does light therapy work to control our moods?

How does it Work?

In 2001 Dr. George Brainard’s team at Thomas Jefferson Medical University made a significant discovery. They identified photosensitive cells in the retina of the human eye that absorb light in the 470 nm range (blue). These cells are responsible for reacting to light and controlling the production of melatonin and serotonin.

How light Therapy Works

When bright light enters the eye a chemical messenger produced in the retina called Melanopsin activates a nerve that connects the retina to a key point in the Hypothalamus region of the brain known as the Suprachaismatic Nucleus (SCN) or body clock.

Once activated the Hypothalamus sends a signal to the Pineal gland. The pineal gland immediately suppresses the withdrawal hormone Melatonin and stimulates the production of the active hormone Serotonin.

As Serotonin is released you become more active, energetic and alert. This action Improves concentration and motivation.

For more information visit www.lighttherapy.com.au