The Miracle Vitamin That Modern Science Refuses To Re-Examine |
The Miracle Vitamin That Modern Science Refuses To Re-Examine
How much of this common vitamin are you supposed to get? The medical system’s answer is hopelessly off base.
Jeff T. Bowles | November 6, 2026
For about a year, Amazon has blocked the ebook version of my newest book. The page says it is published, but anyone who tries to buy it is told it is “not available in your country.” The paperback remains for sale. The same thing happened to an earlier book of mine, on COVID: banned for three years, then restored, then its ebook removed again. It is still down today.
Two banned books are a story about censorship. They are also a clue to a larger story, one that has unfolded over eight decades: the suppression of vitamin D3, a nutrient the human body produces in sunlight, at almost no cost.
In the 1930s, researchers published high-dose vitamin D work pointing to intakes far above today’s norms. Then, in 1941, the standard was fixed at 400 IU per day. That figure came out of a wartime nutrition drive whose goal was preventing babies from being born with rickets — not optimizing adult blood levels. It has barely moved since.
To put the figure in perspective, if thirty minutes of temperate summer sun on a light-skinned adult produces roughly 20,000 IU — about what you would get sunbathing at the U.S.-Canada border in summer — then 400 IU equals about thirty-six seconds of that sun.
Later researchers reworked the arithmetic behind the recommendation and found a statistical error. The corrected requirement came to about 8,895 IU a day — roughly 22 times the 400 IU standard. Whatever view one takes........