Suppliments can be considered by those who percieve the convienience of suppliments occassionally out weigh the benifits of natural foods and are willing to pay extra for this convienence. It is the authors opinion that the advertisements of nutritional suppliments are often inaccurate, or misleading and are obviously designed to increase sales of the their product. Creatine monohydrate is one of the few supplements supported by scientific evidence. GABA or Gamma-AminoButyrac Acid reportedly has caused reactions in some people requiring emergency hospitalization. Glucosamine Sulfate may reverse certain degenerative joint problems in older adults.
Scientific studies have yet to confirm claims.
Look for USP approval on vitamins that pass tests of quality, strength and purity. Vitamin C assists with iron absorbtion. Coffee and tea can inhibit iron absorbtion.