Notes about the studies and dosages.

Approximately 8000 scientific abstracts were examined that attest to the efficacy of nutritional supplements in the treatment of disease and illness. Of those abstracts, 1125 provided nutrient dosage information and they form the body of this comprehensive index.

Three types of studies are included in this index:
1. Human studies.

1. measure the effect of nutrient supplementation on a specific disease or condition
2. measure the effect of a nutrient on correcting a deficiency
3. measure the amount of a nutrient in a human system and consequent disease trends

2. Animal Studies

1. measure the effect of nutrient supplementation on a specific disease or condition

3. Cell Studies

1. measure the effect that nutrient treatment has on affected/diseased tissue from humans and animals

Dosage Information:

The dosages of most common supplements are measured in the metric system (grams (g), milligrams (mg)) or international units (IU), which is a measure of a vitamin’s potency.

Dosages for nutrients that are trace elements such as chromium and selenium are often expressed in very small amounts called micrograms.

The dosage of a nutrient may be administered as a portion of a diet. For example: 1 mg per kilogram/food or diet. A nutrient may be also administered according to body weight. For example: 1 mg per kilogram body weight. This is often the case in animal studies.

In cell or animal studies, experimental dosages may be expressed in moles, which is the amount of a substance measured in molecules. Micromoles and millimoles are also used in experimental studies.

Following is a list of common dosages found in this Index:

1 gram (g) = 1000 milligrams (mg)
1 milligram (mg) = 1000 microgram (ug)
1 microgram (ug) = 1000 nanogram (ng)
1 mole = 1000 millimoles (mmole)
1 millimole (mmole ) = 1000 micromoles (umole)