The Perfect Graphical Astract
Bonvicini, et al.

The Perfect Graphical Astract

By cMasta | pmcmasta | 11 Nov 2020

My friends, I have found it: The perfect graphical abstract.

Feast your eyes upon this again:


Courtesy of Bonvicini, et al.

The article shown above costs £42.50+ to read, but the authors here were such generous genius(es) that they gave us the major takeaway of the article in one beautiful image, thereby saving us £42.50+ and at least 15 minutes of valuable time.

(--Hey, what if the experiment was faulty or you're reading it wrong or you need more data than that? 

--Please don't ruin this for me.)


Here's the rundown:


Cholesterol is ubiquitous in all animal cell membranes. Plants use different molecules called phytosterols.

When cholesterol absorbs ultraviolet radiation, the electrons in the double bond are excited.

When cholesterol is excited, it can be converted into Vitamin D by a protein.

And you want to get your vitamin D.

So don't worry excessively about the cholesterol in your diet unless, perhaps, you eat a lot of processed dead animals.

But I began this underfunded study to discover the wavelength(s)/frequenc(ies) of light that cholesterol absorbs and I got a great answer from that graphical abstract in the form of an absorption spectrum.

Apparently cholesterol absorbs UVC (high energy ultraviolet) light most effectively, which may ionize the molecule (source). The good news for us is that the atmosphere absorbs pretty much all of the UVC radiation from the sun, so we're essentially only exposed to UVA and UVB (lower energy ultraviolet light) waves.

UVB is classified as light with wavelengths between 280 and 314 nm on the CDC's website. 

Cholesterol absorbs UVB light much less strongly than UVC, and this light excites the molecule without ionizing it, thus allowing it to be converted into vitamin D instead of wreaking havoc in its molecular vicinity (source). The molecule doesn't appear to absorb UVA much at all (source). 

That's one of the reasons why we like a healthy atmosphere.

Other studies report that vitamin D is produced more effectively when the face and hands absorb the UVB (source).

Another meta-analysis reports that you should get at least 3 days of significant UVB exposure per week to avoid being deficient in vitamin D in the winter (source).

Depression is a symptom linked to Vitamin D deficiency (source).

Viruses like SARS-CoV-2 can be rendered non-infectious following UVC exposure (source). UVB is found to mitigate the response to COVID, though this is thought to be through its action on vitamin D synthesis (source).




Make an extra effort to get sunlight while you can.



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