Print. Choline is a vitamin-like nutrient, and in health-food stores and on the Internet many claims are made for its potential benefits. The National Academy of Sciences designated choline as âessentialâ and suggested specific daily intakes in 1998.
You see, one of the forms of vitamin D, i.e. vitamin D2 is broken down by the body into different substances. Some of these substances can be very harmful for the body. Vitamin D3 is broken down by the body into a substance called calcitrol, which actually has very important cancer fighting properties.
The only proven benefit of vitamin D is its role in helping calcium build strong bones. But that's far from the whole story. Vitamin D helps regulate the immune system and the neuromuscular system. Vitamin D also plays major roles in the life cycle of human cells. Vitamin D is so important that your body makes it by itself -- but only after skin exposure to sufficient sunlight. This is a problem for people in northern climates.