The debate goes back and forth about the benefits of nutritional supplements. The clue is really in the name. We are all different and some of us may, for a wide number of reasons, require supplemental support. A balanced diet and lifestyle is the primary consideration but sometimes this can be aided by the introduction of a supplement programme.
Modern scientific research on supplements such as Omega 3 oils, Folic acid, B vitamins, Magnesium, Zinc, Glucosamine etc... shows strong support for the adoption of these supplements when appropriate.
The correct advice can help to distinguish the correct supplements and combinations. For example, Iron is absorbed more effectively in conjunction with Vitamin C while Zinc is best taken in a particular ratio with Copper.