Vitamin D does not come from the SUN. It comes from our skin.Vitamin D does not come from the SUN. It comes from our skin.

What is vitamin D?What is vitamin D?

Vitamin D is not one chemical but many. The natural type is produced in the skin from a universally present form of cholesterol, 7-dehydrocholesterol. Sunlight is the key: Its ultraviolet B (UVB) energy converts the precursor to vitamin D3. In contrast, most dietary supplements are manufactured by exposing a plant sterol to ultraviolet energy, thus producing vitamin D2. Because their function is almost identical, D2 and D3 are lumped together under the name vitamin D — but neither will function until the body works its magic (see figure).

How your body makes vitamin DHow your body makes vitamin D

The sun's energy turns a chemical in your skin into vitamin D3, which is carried to your liver and then your kidneys to transform it to active vitamin D.

The first stop is in the liver, where vitamin D picks up extra oxygen and hydrogen molecules to become 25-hydroxyvitamin D, or 25(OH)D. This is the chemical that doctors usually measure to diagnose vitamin D deficiencies. But although 25(OH)D is used for diagnosis, it can't function until it travels to the kidney. There it acquires a final pair of oxygen and hydrogen molecules to become 1,25 dihydroxy vitamin D; scientists know this active form of the vitamin as 1,25(OH)2D, or calcitriol, but for ordinary folks the name vitamin D is accurate enough.

https://www.health.harvard.edu/staying-healthy/vitamin-d-and-your-health-breaking-old-rules-raising-new-hopes

Who can you denyWho can you deny

this fact even in fun?this fact even in fun?

Yesterday, September 26th, a category 4 hurricane named Helene made landfall in the USA.

In 1958, a category 4 hurricane named Helene scraped the USA, beginning on what day?

Yup, September 26th.Yup, September 26th.

One litter of kittens can have multiple “father” cats.One litter of kittens can have multiple “father” cats.

I've often wondered how a litter of kittens look so strikingly different from each other. Perhaps this is the reason? I never knew this!

Because female cats release multiple eggs when they are in heat, they can become pregnant with kittens from more than one “father” cat at the same time!

Number 2 on 10 Absolutely Wild & Weird Cat Facts

https://www.dogdoors.com/questions/why-do-kittens-from-the-same-litter-look-so-different/

Catatumbo, Venezuela, where the lightning never stops.

Actually this is what happened because "A fellow user took Hanyecz up on the offer, paying $25 to order the two pizzas and receiving 10,000 bitcoins (then worth around $41) in return."

In Germany, prisoners who have escaped jail will not be charged any additional penalty for their escape.

This is because the German state acknowledges that it is simply human nature to want to be free. If a prisoner were to be punished for their escape it would be considered a violation of their human rights. However, due to the use of CCTV cameras, motion sensors, and barred windows, it is actually very difficult for German prisoners to escape in the first place.

https://facts.net/germany-facts/

I bet you are not this persistent!

Humans have an entirely unique fingerprint for their tongue! Just like fingerprints, every person’s tongue print is different. Though it’s not commonly used for identification, the texture and pattern of each person’s tongue is distinct, making it a potential biometric identifier just like fingerprints or retinal scans.

Crack was distributed to the black communities by Rick Ross and was shown how to make it by the CIA

💀10,000 sats

Walnuts are the oldest known tree food — they date all the way back to 10,000 BC.

https://www.naturesfield.net/concious-eating/2018/6/11/15-interesting-facts-about-nuts

The Big Ben clock stopped at 10:07 p.m. on 27 May 2005, probably due to an extremely high temperature of 31.8 degrees Celsius.

Fun fact: Facts are fungible.

The "Fun Fact Friday" competition on Stacker News is completely arbitrary. There is no such thing as a "better fact".

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