Tag: Uva

Globally, over 50% of the population is at risk for vitamin D deficiency, yet how our bodies produce this essential nutrient remains a common point of confusion for many. The critical question is, is vitamin D from UV A or B, and understanding the precise mechanism is key to safe sun exposure and overall health.

According to a 2024 report by ABC News, glass blocks approximately 95% of the UVB rays from sunlight. This means that despite popular belief, you cannot get vitamin D through a window, as the specific type of UV radiation needed for synthesis is almost completely filtered out.

Contrary to a persistent myth, most modern cosmetic tanning beds are designed to emit a high proportion of harmful UVA rays, not the UVB required for vitamin D synthesis. So, **do UVB tanning beds give vitamin D**, and should they be considered a reliable source for this essential nutrient?

According to the Skin Cancer Foundation, most people use significantly less sunscreen than is recommended, compromising its effectiveness. The teaspoon rule is an easy-to-remember guideline for applying the correct amount of sunscreen to ensure adequate protection for all exposed areas of your body.