[hhshhhhjjjd]

"healthy" in that "you won't die" -- not necessarily "healthy" as in "ideal for maintaining peak health". That's probably a bad comparison... But I'm not sure that you can count out the importance of the intestinal microbiome. It's not just vitamins or metals--one can be deficient in beneficial bacteria as well. These bacteria are why we can "throw anything" at our intestines. That's true until the good bacteria have nothing left to sustain them and die off.