eli5 why we have such complex dietary requirements. Did our ancestors thousands of years ago have extremely well balanced diets?
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Someone else alluded to this, but the best answer is that our ancestors died a lot younger than people nowadays and one of the many reasons for that was their diet.
Thousands or millions of years ago, food scarcity was a lot more of a problem than it is today. Diseases and other health problems were very common because people were not eating a well balanced diet for the most part.
Humans evolved to survive off of a variety of food sources because they had to. Often one food source would run out and we would fall back onto another. This swapping and depriving of some nutrients is tough on the body. We don’t want to live like that and have health problems and die young anymore, and we have a choice to eat better and prevent those things.
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