Validated at least by reference, which he has given. Upvoted. We need more than this such as references to it or disclaimers for it, niether of which I can find. That is not to detract from the existence of the paper which he referenced.

Whether nitric oxide has much to do with health is anothre question. I believe one of the reasons viagra works is due to nitric oxide, so perhaps it's we should be viagring instead.

Mind you the important part is where it's enhanced, and by how much.

And we're taking purified alicin at nearly toxic doses. In vitro. Yes, garlic can kill. And it was described to be active in vascular tissue not lungs.

Now Viagra is an interesting bet, but it also does not reach lungs or non-vascular cells.