LED Light and Vitamin D

How to Use Light for Vitamin D

By Tina Boyle, eHow Contributor

Sunlight spurs the production of one form of vitamin D, an essential nutrient. An alternative to getting out in the sun is to use a grow light, but only one type of grow light stimulates vitamin D production. A lamp with a bright white light will put you at risk of ultraviolet (UV) light exposure, which can cause cataracts and skin damage. Other lamps are simply ineffective for your needs. However, light therapy using blue-light LED (light-emitting diode), part of the full visible, colored light spectrum, is safer to use and FDA-approved for the treatment of vitamin D deficiency and the depression it can cause.

Blue-light produces vitamin D at a dimmer light intensity and at a lower wavelength in the spectrum, minimizing the risks associated with UV exposure. “For the most benefits, the light has to be a very specific wavelength,” according to thebodyblues.com. Blue light in the 405- to 425-nanometer wavelength range is optimum for triggering vitamin D production and FDA-approved.

Since the sixth century B.C., the sun has been considered a source of natural health and happiness. Today light therapy is used to improve many health conditions. The sun is a source of vitamin D, and other vitamins, hormones and enzymes need light in order to properly function. When people are deprived of sunlight, such as during the short days of winter or the rainy days of spring, their well-being can suffer. Light therapy uses artificial sunlight to replicate the sun’s healing effects.

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