What is the difference between a compound and a molecule? A compound is a substance that is composed from two or more different elements. Water (H 2 O), table salt (NaCl), carbon dioxide (CO 2), methane (CH 4) and chlorophyll (C 55 H 72 O 5 N 4 Mg) are a few examples of compounds. They are compounds because they each contain more than one kind of element.
Recommended Daily Intake for Optimal Health. Based on the most recent research, the current recommendation is 35 IUs of vitamin D per pound of body weight. So for a child weighing 40 pounds, the recommended average dose would be 1,400 IUs daily, and for a 170-pound adult, the dose would be nearly 6,000 IUs.
Kids are advised to get a daily vitamin D dose of 200 IU. That suggestion came from an Institute of Medicine panel that based its recommendation on the amount of vitamin D needed to prevent rickets in infants. However, more and more vitamin D experts have begun to suggest that children and adults need much more vitamin D than previously recognized. New evidence strongly supports this opinion. El-Hajj Fuleihan and colleagues enrolled 340 schoolchildren in a one-year study.