A、How to keep fit. B、Common diseases caused by vitamins. C、Vitamins and our health. D、Vitamin in different kinds of vegetables.

When people have enough B vitamins, their appetite is good and their nerves are calm. B vitamins in the diet come from some meats and vegetables, milk, cottage cheese, and whole grains.
    When a grain is processed, it loses vitamins. For example, there is a big difference between white and brown rice. When rice is processed, the brown outside is lost. The brown outside of rice has an important B vitamin which white rice lacks. In short, brown rice has more B vitamins than processed rice.
    Vitamin C keeps the cells of the body together. It helps skin tissue recover from cuts and bums. Vitamin C in the diet comes from tomatoes, fruits like lemons and oranges, and some vegetables such as cabbage and green peppers.
    Vitamin D is called the "sunshine" vitamin. When people sit outside, ultraviolet rays from the sun change fat in their skin to vita- min D. Vitamin D disease in children are called rickets. Rickets is more common in countries that have long winters with little sun- shine.