Joseph Mercola

A growing body of evidence shows that vitamin D plays a crucial role in disease prevention and maintaining optimal health.

… While scientists refer to vitamin D as a vitamin, it is actually a steroid hormone obtained from sun exposure, food sources, and supplementation.

… Another critical point to remember is you shouldn’t take any vitamin D supplement without taking vitamin K2.

… I strongly recommend ample sunlight exposure as your main source of vitamin D, as the sun provides beneficial UVB wavelengths that are needed to optimize your levels.

… Although most dermatologists will tell you to avoid the sun to prevent diseases like cancer, exposure can actually aid in skin cancer prevention – and there are studies confirming this.

… During winter months, you can go with supplementation. But this is not as simple as taking any vitamin D pill; there are many things to consider.

… What your body requires is vitamin D3 and not vitamin D2, the synthetic form commonly prescribed by physicians. One microgram of vitamin D3 or 25-hydroxyvitamin D3 is about ve times more potent in raising serum 25(OH)D than an equivalent amount of vitamin D2. Aside from being less effective, vitamin D2 can also pose potential harm to your body.