Depression is a mental disorder, but at some times is not treated as one. Depression is never to be taken lightly, and should always be taken very seriously.    Some symptoms of depression are:   - Lack of interest in normally enjoyable activities.
IU (international unit): An international unit (IU) is an internationally accepted amount of a substance. This type of measure is used for the fat-soluble vitamins (such as vitamins A, D and E) and certain hormones, enzymes, and biologicals (such as vaccines).The definition of an international unit (IU) is generally arbitrary, technical, and eminently forgettable.For example, an IU of vitamin E is the specific biological activity of 0.671 milligrams of d-alpha-tocopherol. Nonetheless, most IUs are quite handy and helpful in use as a means of standardizing measures.he definition of an international unit (IU) is generally arbitrary, technical, and eminently forgettable. For example, an IU of vitamin E is the specific biological activity of 0.671 milligrams of d-alpha-tocopherol.
The International Micronutrient Malnutrition Prevention and Control (IMMPaCt) Program works with global partners to contribute CDC skills and resources to eliminate vitamin and mineral deficiencies (micronutrient malnutrition) among vulnerable populations throughout the world.eficiencies in micronutrients such as iron, iodine, vitamin A, folate and zinc affect nearly one-third of the world's population, and the consequences can be devastating. 1 For more information, see Micronutrient Facts.