The amounts and ratios of nutrients used in DT Basics are based on a long history of clinical use and updated using the newest research findings. The 1:1 calcium to magnesium ratio, high potencies of vitamins E, C and B-complex, extra pathogenic acid for adrenal support, and a full complement of trace elements distinguish DT Basics from ordinary multiple vitamins. We have purposely left IRON out of this supplement because recent research has linked the availability of iron to infectious organisms in arteries, which are now proven to be directly linked to blood clots that cause 85% of heart attacks and strokes. Copper is included because of its importance for SOD antioxidant enzyme activity and to maintain a healthy balance with zinc. The benefits of lowered levels of IRON are just beginning to be appreciated, and lower iron levels may partially explain the longer life span of women