Year: 2022

SUNLIGHT IS GENERALLY SUFFICIENT. "Although the amount of vitamin D adults get from their diet is often less than what's recommended, exposure to sunlight can make up for the difference." Except if obese, taking drugs that interfere, or with other medical conditions. http://www.mayoclinic.org/healthy-living/nutrition-and-healthy-eating/expert-answers/vitamin-d-deficiency/faq-20058397 View in LinkedIn

SUPPLEMENTATION BOOM. "At some point in the last decade, screening blood for vitamin D levels became a routine part of medical care. Feeling a little low this winter? Get a vitamin D test. Think you didn't get enough sun last summer? Check your vitamin D levels. In less than ten years, the amount insurers spent on testing rose from $1 million (in 2000) to $129 million (by 2008). Seventy-five percent of Americans are now on vitamin D supplements." https://lnkd.in/e_BB-rH View in LinkedIn

D3 BETTER THAN D2. "Drisdol is a synthetic form of vitamin D2—made by irradiating fungus and plant matter—and is the form of vitamin D typically prescribed by doctors. This is not the type produced by your body in response to sun or safe tanning bed exposure, which is vitamin D3." https://lnkd.in/ep_VBW6 View in LinkedIn

MUSHROOM VITAMIN D. "The Australian research investigated the vitamin D levels of three standard button mushrooms exposed to direct midday sunlight. Results confirmed that mushrooms generate vitamin D levels in a similar way to humans and an average serve* can provide 100 per cent of an adult’s vitamin D requirement (10 mcg)." https://lnkd.in/eMmdAs5 View in LinkedIn

D FORTIFIED FOODS. "Fortified foods provide most of the vitamin D in the American diet. For example, almost all of the U.S. milk supply is voluntarily fortified with 100 IU/cup. In Canada, milk is fortified by law with 35–40 IU/100 mL, as is margarine at ≥530 IU/100 g." Like all these public health medication programs, one shoe does not fit all. https://lnkd.in/eVmSxuR 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

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 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

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

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