Probiotic supplements may do the opposite of boosting your gut health.

[Laffy Kat]

2. According to my GI doctor (I have IBS), the only type of probiotics that work...

Are suppositories. The reason is simple: Your stomach digestive juice is basically hydrochloric acid and it kills most all bacteria; it doesn't know the "good" bacteria from the "bad" bacteria, so spending money on probiotics is a waste. It's your large bowel that can put the right bacteria to use, so probiotic suppositories--and in extreme cases--fecal transplants are much more successful. I mean, it makes sense to me. Some people still swear by certain probiotics, however, and if it works for you, I'd say keep it up. They never really worked for me.