Vitamin D – 3000 to 5,000 IU daily for most adults is safe and effective for the prevention of flus and colds. No other supplemented nutrient has been as extensively studied as vitamin D. If you are low in vitamin D, fewer Natural Killer cells (NK-cells) are formed, and your innate immune defenses against viruses and bacteria become impaired.
Given the many news reports of published studies showing much benefit from the use of Vitamin D, people might reasonably conclude that a consensus had emerged favouring its use. Vitamin D has been around for decades. Official bodies like Health Canada have found sufficient evidence to rule on its efficacy, safety and side-effects. At the official Eat Right Ontario website it states “recently, the recommended amounts for Vitamin D increased for people of all ages”. For older children and adults from 600 I.U. to 4000 I.U. per day.
Vitamin B6, Vitamin B12 and Folic acid regulate levels of homocysteine, an amino acid associated with Alzheimers disease. According to a 2009 study conducted by the Oxford Project to Investigate Memory and Aging, the above B vitamins slow the rate of brain shrinkage, a common impairment among individuals with Alzheimers. Individuals with the slowest rate of brain shrinkage scored significantly better on cognitive tests
It is always wise to invest in a good Vitamin B Complex either in a liquid form or in tablets or caplets, in order to ensure a balanced s