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.
Teens need 400 units of vitamin D each day. The main dietary source of vitamin D is usually fortified milk, which contains about 100 units per cup. According to Jennifer Hillard at Georgia Health Sciences University, a deficiency in vitamin D can contribute to visceral, or abdominal fat, which can lead to serious health conditions, including diabetes and heart disease.