This is why I stick with single ingredient whole foods and try to maximize their nutrient density. Marty Kendall is a good source for this information. I do take supplements but not in lieu of maximizing the quality of my diet. I consider my diet to be the foundation of my health and the supplements to be an added insurance policy. The value of the food I am sure of. The value of the supplements less so although vitamin D and magnesium do seem to be essential for me and probably fish oil for the omega 3's. I don't believe in magic pills or quick fixes

Jean