I’d actually argue that Walker is also “world-class” as far as his position goes.

I’ve had stomach problems (IBS) my entire adult life. Started putting two tbs of apple cider vinegar into my tea. Perfect poops. Stopped for 2 weeks after my baby was born. Back to watery poops. Started back up again... perfect poops.

No science to back it up, just my own 2 cents.