With the days getting shorter and the sky often clouded over, it can be difficult to get enough Vitamin D. Vitamin D is an essential vitamin found in a variety of foods, as well as produced by our bodies in response to sunlight. Not only is Vitamin D important for helping regulate the absorption of calcium and phosphorus for strong bones, but research suggests that it may also play a role in helping with mood regulation and immune system functioning.

Although some foods do contain Vitamin D, these sources may not yield adequate amounts of this essential vitamin. The best source for naturally obtaining Vitamin D is through sun exposure – specifically from ultraviolet B (UV-B) rays that come directly from the sun. When exposed to UV-B rays, our skin synthesizes cholecalciferol (Vitamin D3), which then travels to the liver and kidneys where it eventually becomes activated as calcitriol – an active form of Vitamin D that helps to regulate calcium and phosphorus production throughout the body.

So can you still get enough Vitamin D on cloudy days? The answer is yes! On cloudy days, UV-B rays are still able to penetrate through clouds and reach your skin, meaning that you can still absorb some sunlight for necessary vitamin production. However, there are certain factors which can inhibit how much UV-B exposure one may get such as air pollution or altitude which reduce the amount of UV-B radiation reaching one’s skin. Therefore, if you live in an area with more clouds or higher levels of air pollution than usual it’s likely best to supplement your diet with additional sources of Vitamin D in order to ensure you’re getting enough of this essential vitamin into your body.

When looking for dietary supplements rich in Vitamin D there are a few key ingredients you should look out for such as cod liver oil or salmon oil which both contain natural forms of Vitamin D3 that will help promote healthy bone structure and improved mood regulation. Other good sources include cheese, egg yolk, and certain mushrooms like shiitake or maitake mushrooms which are rich in ergosterol – another form of naturally occurring provitamin that eventually gets converted into calcitriol (Vitamin D).

In conclusion, although it’s possible to obtain some level of vitamin d even on cloudy days due to the fact some UV-B radiation still reaches our skin while under cloud cover – the amount we receive may be limited depending on other environmental factors like air pollution or altitude. Therefore if you live an area prone to more clouds than normal it’s wise to supplement your diet with additional sources of Vitamin D like cod liver oil or cheese in order ensure sufficient levels throughout your body.