If we stop and think about it, our present 'course' regarding human nutrition is incredibly stupid. On one side, here we believe evolution and natural selection, and the influence of genetic diversity and specificity of human health... and yet we just throw this all out the window when it comes to nutrition (and other aspects of human health).
The human physiology evolved, and the GI tract developed, to east certain foods (handle certain groups of fats, proteins, etc.) and use bacteria to help with digestion and aspects of protection from 'bad' bacteria. And now we are taking antibiotics orally, sterilizing so much of our food. When are modifying foods into 'food-like' chemicals and swallowing them regularly. I mean, I'm a PhD chemical engineer... if I just mixed up some vegetable oils, ran some reactions on those oils, poured them into a cup and said, "here, drink this..." Would you? Hell fucking no! I wouldn't drink it myself! Well, we are generally allowing large food conglomerates to do exactly this... we have no idea on the long term human health effects of consumption of modified oils and so many other processed and synthesized foods.
Every single food we eat has a pharmacological effect on our body and triggers hormone responses such as insulin release, etc. (don't believe me, just ask someone with a severe food allergy); we need our healthy GI track bacteria. What science has been done generally supports that GI track bacterial flora population 'health' is very ,very important for overall health. "Good bacteria' break down simple sugars (so we absorb them all), fight 'bad' bacteria that can release toxins/enzymes into our GI track, blah blah blah... lot of reasons.
It is good that this gaining momentum because a lot of doctors don't know shit about this unless their medical school made them learn it and a lot of us regular people just don't have the inclination, time, or necessary background education to really study in this area. For now... I recommend everyone try to do some reading in the area of basic human biochemistry and the biochemistry/microbiology of the GI track and food digestion. Frankly I need to do more myself. I did a lot of reading a couple years ago when I got really sick, and had all kinds GI tract and allergic issues for a while... learned some of what I noted above and lot more. I'm pretty much all better now... but, honestly, my primary doctor didn't have clue what was wrong... figured out a lot of it on my own, did see a specialist who was 'mildly' helpful, and sort fixed myself.
oh yeah... Merry Christmas / Happy Holidays / Happy New Year everyone!