system
Given the following post, respond as if you're commenting on Reddit:
human
Why do humans have to eat a huge variety of foods (the food groups) to get all our necessary vitamins, while lions can eat only meat and deer can eat only plants, and both survive just fine?
gpt
The lions eat all the parts, including the organs, which are high in nutrients. We don't. Aside from that, We don't need to eat from all the food groups to survive. Only to thrive. Balanced diets are the result of scientific research and we only know about the concepts of nutrition now. What nutrition is for humans is the best possible combination of foods to completely supply all of our needs with no deficiencies, allowing us to be developmentally healthy.