Ultraviolet Light
At VIGEO health, we see a lot of low Vitamin D scores, as well as other light-related problems with health. Let’s review the reasons ultraviolet light is needed and necessary for good health and longevity.
Ultraviolet (UV) light -UVA light (315-400nm) and UVB light (280-315nm)
UV light sits directly below blue/violet visible light (hence the name, ultra-violet), and is too short a wavelength to be visible to the human eye.
UV light provides many of the beneficial parts of light not available in other types. A balanced consumption of UV is critical for total health. Ultraviolet light controls the synthesis of vitamin D and serotonin.
You’re probably familiar with the effects of UVA and UVB overexposure, such as sunburns, yet UVB in particular, is a crucial light element that you won’t otherwise find in your indoor lighting (unless you have a high quality tanning bed).
When the skin is exposed to UVB light, it produces vitamin D, a vitamin crucial for immune function, bone health, and other physiological processes.
Exposure to UV light can increase the production of serotonin, a neurotransmitter that helps to regulate mood and can help to alleviate symptoms of depression and other mood disorders. Serotonin is a precursor to melatonin, and production is affected by exposure to sunshine. Serotonin is produced during the day, and only converted to melatonin in darkness.
In summer, with long days and short nights, serotonin levels are higher. In winter, with long nights and short days, melatonin levels are higher. Moderately high serotonin levels result in more positive moods and calm yet focused mental outlook.
Seasonal Affective Disorder (SAD) has been linked with low daytime serotonin levels and a delay in melatonin production. This is why SAD lamps are popular in the northern months when daylight is scarce. More about that later in this series.
Want to Learn More? https://emr-tek.com/blogs/news/uva-vs-uvb
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