You’re welcome.
I’m going to do a little experimenting myself.
I do not get much sun, but (mainly my hands) get exposed to UV pretty frequently looking for fluorescence in drilled samples (and oil shows—crude oil and many refined oils glow under UV light) dozens of times daily when I am working, which is about 2 days out of 3. That may have some impact, too. I seldom get colds.
It’s gotta be the right UV. UVA won’t do squat.
I’m gonna make one more comment, not specifically directed at you:
Listen folks, we’ve heard all the stuff about Vitamin D being poisonous, yada yada blah blah...
But there have been clinical cases of accidental overdoses that were in the MILLIONS OF UNITS PER DAY that went on for MONTHS BEFORE ANY SYMPTOMS WERE OBSERVED, AND THE SYMPTOMS STOPPED WHEN THE OVERDOSING STOPPED.
We also continuously hear about getting it from the sun. I’m certainly not going to say you NEVER get it from the sun, but for the UVB to get through the atmosphere, the sun has to be within about 30 degrees of the zenith. in the continental US I would guestimate that this happens LESS THAN TWO MONTHS PER YEAR, AND ONLY FOR THE SOUTHERN LATITUDES.
You can go to the drugstore and get a bottle of 1000IU Vit D for like 3 bucks.
And because Vitamin D has been shown to regulate the copying of DNA in the cells to prevent errors, VITAMIN D HAS BEEN SHOWN UNARGUABLY TO REDUCE THE RISK OF A LARGE NUMBER OF CANCERS!
Vitamin D won’t kill you, but COLON CANCER WILL!
If Vitamin D were all that dangerous, OUR STREETS WOULD BE LINED WITH DEAD MAILMEN!
Go to the store and DO IT TODAY! The life you save MAY BE YOUR OWN!
/end rant/
That is similar to a therapy that has been used with tremendous success since the 1930s to trigger a strong immune response to fight sepsis. A small vial of blood is drawn, irradiated with intense UV, and reinjected. It used to be called "Photox," the 'ox' coming from the hydrogen peroxide that was used in conjunction.