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WRONG RDA FOR VITAMIN D. "The Recommended Dietary Allowance (RDA) for vitamin D is ten times lower than what we actually need, say two teams of researchers who have challenged the US's National Academy of Sciences (NAS) and the Institute of Medicine (IOM), both responsible for the RDA." https://lnkd.in/eUCYVjB View in LinkedIn

HUMAN PHOTOSYNTHESIS. "Solar ultraviolet B photons are absorbed by 7-dehydrocholesterol in the skin, leading to its transformation to previtamin D3, which is rapidly converted to vitamin D3. Season, latitude, time of day, skin pigmentation, aging, sunscreen use, and glass all influence the cutaneous production of vitamin D3." https://lnkd.in/eJwebrk View in LinkedIn

SURPRISING DATA. "Even in the sunniest places, such as Saudi Arabia and Australia, 30% to 50% of adults and children have deficient or insufficient levels of vitamin D. At the latitude of Edmonton, Alta, 90% of children have deficient or insufficient levels." http://www.cfp.ca/content/57/1/16.full View in LinkedIn

TOO MUCH D. "Vitamin D 1000 μg (40,000 IU)/day causes toxicity within 1 to 4 mo in infants. In adults, taking 1250 μg (50,000 IU)/day for several months can cause toxicity. Vitamin D toxicity can occur iatrogenically when hypoparathyroidism is treated too aggressively." https://lnkd.in/eDUgFEU View in LinkedIn

UNEXPECTED BOMBSHELL. "Over 90 per cent of healthy and active young people are suffering from low levels of Vitamin D." Worldwide. Not just a lifestyle illness like diabetes. https://lnkd.in/e5pd2zH View in LinkedIn

"VITAMIN D TOXICITY can cause non-specific symptoms such as anorexia, weight loss, polyuria, and heart arrhythmias. More seriously, it can also raise blood levels of calcium which leads to vascular and tissue calcification, with subsequent damage to the heart, blood vessels, and kidneys." This is at high doses, uncommon. https://lnkd.in/eVmSxuR View in LinkedIn

AN EPIDEMIC OF VITAMIN D DEFICIENCY is "sweeping across the world, and it’s an epidemic of such magnitude and seriousness that is not only alarmingly widespread but a root cause of many serious diseases such as rickets, multiple sclerosis, cancer, diabetes, osteoporosis, tuberculosis and heart disease." https://lnkd.in/e5pd2zH View in LinkedIn

VITAMIN D MANDATE. "Both the United States and Canada mandate the fortification of infant formula with vitamin D: 40–100 IU/100 kcal in the United States and 40–80 IU/100 kcal in Canada." How did this come about? What is so out of whack we have to mess with nature? The kid in the cot in the morning sun? https://lnkd.in/eVmSxuR View in LinkedIn

VITAMIN D AS HEALTH MARKER. "Decreases in vitamin D levels are a marker of deteriorating health. Ageing and inflammatory processes involved in disease occurrence and clinical course reduce vitamin D concentrations, which would explain why vitamin D deficiency is reported in a wide range of disorders." https://lnkd.in/dDKztC5 View in LinkedIn

OLD ROOTS. "In the 1930s, a milk fortification program was implemented in the United States to combat rickets, then a major public health problem. Other dairy products made from milk, such as cheese and ice cream, are generally not fortified. Ready-to-eat breakfast cereals often contain added vitamin D, as do some brands of orange juice, yogurt, margarine and other food products." https://lnkd.in/eVmSxuR View in LinkedIn