PQQ is another "maybe" vitamin. It participates oxidation and reduction and is found in trace amounts in whiskey (it leaches from the charred oak) and other foods, and often formulated together with coQ10.

PQQ was almost declared a vitamin a decade or two ago.

If you have the pure crystals, drop just a tiny one into a glass of water and watch it dissolve as it sinks. Beautiful show! Also, you'll see it changes color with pH.

The article mentions creatine in passing. But in what it says, I'm surprised the writer didn't add it to the list.

Besides what it already (sort of) says, creatine also helps curb muscle aches caused by the type of temporary tissue damage working out and age-related muscle wasting causes. People who will be bed-ridden for a while can certainly benefit from it, as well as anyone advancing through the aging process.

The article also hints at pigments by including Astaxanthin. Some of the other natural pigments also have similar health benefits. You've certainly heard of beta carotine in this capacity.

Good article. I think most people who are active about their health would agree with most of what is included.

> I don’t think there is any acute disease associated with Vitamin-D deficiency (which most indoors people have), though it makes you pretty unhealthy if you don’t have enough of it.

For children https://en.wikipedia.org/wiki/Rickets an a few more in https://en.wikipedia.org/wiki/Vitamin_D_deficiency

> Boron [...], Sunlight [...], ...

They are not vitamins, because they are in other lists.