Earth's close partner, the Sun is a star worshiped and feared all at the same time. We all know too well that over exposure to its ultraviolet rays may cause skin cancer, and with the depletion of our Earth's Ozone those rays are stronger than ever. But on the other hand, the Sun's warmth and energy assists our cycle of living. For us humans the sun not only aids our food supply, but is also a direct source of vitamin D—a vitamin critical for healthy bones, teeth, and chronic disease prevention. Ongoing studies link vitamin D deficiency to breast and colon cancer, diabetes, multiple sclerosis and osteoporosis.

So vitamin D is essential to our health, but how do we get it without compromising our toxin-free sunscreen or moving close to the equator during winter? Well, we can certainly opt for supplements and fortified foods, but don't give up on nature so quickly. While the number of foods naturally containing this sunshine vitamin is limited, we can find concentrated amounts in the following sustainable foods.