Naturally I also publicized this article in DeHaan Services ("Quick Reference Guide to Probiotics and Prebiotics").
First, get inspired by asking yourself "What is really going on?" when you encounter something. This is especially useful if advertising expects you to believe a claim that you never had realized could exist.
Second, if you use Google, include inurl:.edu after the terms you're seeking. Google will limit (most) of the results to educational institutions. You still need to read the article and figure out whether it makes sense, but this weeds out gazillions of unreliable sources.