Mineral Supplements - Ask the Dietitian Mineral Supplements I am an exercise physiologist and weight management consultant. I don't really know how you feel, but I fundamentally disagree with this principle. Just my opinion though. Generally vitamin and mineral supplements are not encouraged, due to their low absorption and high cost.
Real food is much cheaper and better absorbed than supplements.
Unabsorbed nutrients from a supplement are excreted in urine. For persons who eat less than 1600 calories per day, it would be difficult to eat enough nutrient dense foods to achieve the RDA for every nutrient, especially for iron requirements of a menstruating female. So an individual's need for a particular nutrient may be less. I have searched the medical literature as well as searching over 75 nutrition journals and did not find one article on colloidal minerals. To that conclusion, I deemed the information about colloidal minerals to be from testimonials which is passed on as propaganda.