During this shelter-at-home time, we’re all trying to be extra careful about what we’re eating – plenty of fruits and vegetables for strong immunity, plenty of water for good hydration, plenty of exercise. We may want to add plenty of vitamin D to the list. Known as the sunshine vitamin, our bodies can actually make vitamin D when exposed to sunlight. However, dark winter days, abundant rain and even sunscreen make it more difficult in central Illinois. Up to 50 percent of the world’s population may not get enough sun, and 40 percent of U.S. residents are deficient in vitamin D. We simply