DOES BLUE LIGHT EXPOSURE HAVE BENEFITS?
Dr. Jim Martin 07/11/2016
There has been much debate over blue light and its beneficial and potentially negative effects. But research has shown that blue light has many positive benefits that can be used to help treat a variety of disorders.
What Is Blue Light?
Red, orange, yellow, green, and blue light (as well as many shades of each) are contained in sunlight. All of these colors combine to create "white light" or sunlight.Blue light has the shortest wavelength — and most energy — of all the color spectrum.
What Are Sources Of Blue Light?
The main source of blue light is sunlight, but there are many man-made sources, including display screens on computers, smartphones and other digital devices, fluorescent and LED lighting, and flat-screen televisions.
Blue Light's Positive Benefits
As mentioned, blue light — and, in particular, blue light therapy — has a variety of positive benefits for:
Researchers at two U.S. hospitals have examined and confirmed the positive impact that daytime exposure to blue light has on alertness and cognitive performance.
A lack of daylight during the winter months can lead to seasonal affective disorder, a type of depression whose symptoms include debilitating fatigue and severe mood disorders. Blue light therapy has helped patients suffering from this disorder show rapid improvement. LED therapy has even been shown to have positive effects in the treatment of post-traumatic stress disorder.
Low intensity blue light has been shown to kill the bacteria that infects clogged skin pores and creates cystic acne.
Psoriasis is a medical condition that causes various areas of the skin to become inflamed and peel. In severe cases (psoriasis vulgaris), a type of skin cell known as keratinocytes is excessively multiplied. However, blue light exposure has been shown to counteract the excessive proliferation of keratinocytes. Blue light is also being used by dermatologists to ward off skin cancer in patients who have small, scaly bumps called solar keratoses on areas of the skin exposed to the sun.
Studies have shown that blue light impacts certain immune cells in the skin that help lead to eczema, which causes inflammation and severe itching. Blue light suppresses the activation of these cells while having an anti-inflammatory effect.
Blue light has been shown to naturally release nitric oxide, which expands blood vessels and leads to healthy functioning of the heart. This, in turn, can help improve high blood pressure, inflammation, muscle aches, and even help prevent serious heart issues.
Though blue light has positive effects, it also has negative effects on the eyes. Broome Optical in Amarillo can help you find solutions to combat the negative effects of blue light while still enjoying the positive attributes.