>>11104872Truth and proper /sci/ answer is that no one knows for sure, because its not as if there has been a large double blind study feeding people nothing but onions.
You probably can live off it for quite a bit because humans are quite resilient. (a healthy fat person could go for months on just water fasting + vitamins/electolytes)
My suspicion is that there may be substances in the world which may not be "nutritional" per se, but be helpful in other ways and which we may not know about. Think anti-oxidants, flavonoids etc. These may not be necessary in the sense of running out of calories if you don't get then, but may help with stuff, which in the long run may effect cancer rates etc. I am quite a bit suspicious of the carb and added sugars content since based on everything I have read carbs and especially sugar = pretty naughty.
Compare and contrast with substances like curcumin, which we have no idea what it actually does, but it seems to be vaguely "anti-inflammatory" and help regulate insulin. None of those functions may be "nutritional" or have anything to do with "calories", but may explain why Indians have, say, the lowest rate of Alzheimer in the world.
Similar stuff about substances in green tea, fish oils etc. And fuck if we know what most of them do, but when you see 90y olds in Ikaria or Okinawa having the health/mobility of 70y Americans you suspect that there may also be substanes in one's diet with "mechanical" properties (ie, triggering autophagy? protecting about degenerative effects?) that go beyond nutrition.
Best thing. Is to just try to copy the eating habits of those that live healthy. Duh. So. Lots of Fish and no sugars I guess.
