Vitamin D3
D-3 is necessary for the utilization of calcium and phosphorus, and for the assimilation of Vitamin A. It also has a strong immune enhancing effect. In the tropics, where sunshine makes Vitamin D deficiency rare, osteoporosis, cataracts, colon and prostate cancer are far less common. Vitamin D works synergistically with Vitamin A to control cancer by inducing certain types of cancer cells to differentiate into normal cells to stop multiplying uncontrollably. The effect is so pronounced that drug companies are working on patentable analogs for drug therapy.

DHA
Docosahexaenoic acid (DHA) is an omega-3 fatty acid. DHA is the most abundant omega 3 fatty acid (polyunsaturated fatty acids, PUFAs) in the brain and retina. It comprises 40% of the PUFAs in the brain and 60% of the PUFAs in the retina. DHA deficiency is also associated with cognitive decline. PS controls apoptosis, and low DHA levels lower neural cell PS and increase neural cell death. DHA is depleted in the cerebral cortex of severely depressed patients. Very high levels of DHA are present in the retina, specifically in the disk membranes of the outer segments of photoreceptor cells. DHA accounts for over half the total fatty acyl groups present in the phospholipids of rod outer segment membranes, a proportion higher than is found in any other tissues.