That seems to be the problem with so many of these "studies"....no real consensus on what does and doesn't work. Personally, I'll just sit it out until something more meaningful comes along. I've seem a lot of these "arguments" come and go. Let me know if/when something more meaningful turns up.I added d-ribose to my daily routine a few months back, and could not notice any effects. Then, I read something bad about it, and stopped taking it altogether. And I don't remember what the bad was.
I also got some inulin, a pre-biotic. Have not opened that. Cause I read something bad about it. It feeding the bad guys when its supposed to feed the good guys.