According to a 2009 study published in the Archives of Internal Medicine, 77 percent of Americans have insufficient levels of vitamin D in their bodies.

The northern 25% of the earth (anywhere north of Atlanta, GA) experiences 8-9 months of the year where the sun doesn’t get high enough in the sky or show itself long enough for your skin to produce enough vitamin D naturally. Plus if you don't get outside with your shirt off for long enough even during those 3 months of the year you won't make enough vitamin D from the sun anyways, making supplementing it pretty much the only way to get enough on a daily basis. 

The benefits listed below and many others max out with a vitamin D blood value of 70. I recommend you get your vitamin D tested prior to adding in a supplement to see if increasing or maintaining where you’re at is necessary.

Vitamin D is super important for optimal health due to its direct communication with over 2000 genes in your body.

Just to name a few benefits:

• Improved resistance to gaining surface body fat

• Lowers blood sugar levels

• Lowers blood lipid levels

• Reduces bone and joint pain

• Increases strength

• Improves mood and energy

• Reduces severity of seasonal affective disorder

• Increases deep sleep totals 

• Lowers blood pressure

• Increases testosterone

• Increased immune system and viral defense

• Inhibits tumor growth

• Increases cancer killer cell function

• Lowers inflammation