Effects Of Blue Light On The Brain

Effects of blue light and sleep.

Effects of blue light on the brain.

It has long been known that light exerts powerful effects on the brain and on our well being. Red light does seem to raise heart rate while blue light lowers it. Blue light suppresses the release of melatonin in our brains which leads to a lower quality of sleep which in turn can contribute to a variety of negative health effects. Blue light exposure at night from smartphones tvs ipads tablets and computers and lack of sunlight and full spectrum light during the day is a major risk factor for insulin resistance anxiety depression mood disorders headaches and other health problems.

The fact that blue light penetrates all the way to the retina the inner lining of the back of the eye is important because laboratory studies have shown that too much exposure to blue light can damage light sensitive cells in the retina. There are countless clinical studies that support the harmful effects that blue light can have for people who are prone to headaches or migraine attacks. Blue light exposure may increase the risk of macular degeneration. Researchers have suggested that there is a specific neural pathway from the eyes to the brain separate from how vision is transmitted that ultimately causes blue light wavelengths to.

The visible light with the highest intensity is blue light and just above it on the spectrum is uv radiation. The effect is small but has been corroborated in a 2015 paper by a group in australia. While light of any kind can suppress the secretion of melatonin blue light at night does so more powerfully. Recent research by the group has found a small effect of coloured light on heart rate and blood pressure.

Blue light and the circadian rhythm. Before the technological age blue light primarily came from sunlight. Light is not only required for vision but is also essential for a wide range of non visual functions. As light rays hit those cells they tell the brain to stop pumping.

One concern is that because blue. Blue light and our eyes. Specialized cells in the retina are finely tuned to respond to the short wavelength light that comes from a cloudless blue sky. Human eyes have receptors that contain a photopigment called melanopsin that is sensitive to blue light.

The blue light. Exposure to blue light is detected by the eyes and signals the pineal gland to suppress the secretion of the hormone.