system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do humans need to eat carbohydrates to survive? To thrive?

I am keenly interested in nutrition, but I feel like there is so much talk on either side of this debate. I read blogs from people who say they have eaten a zero carb diet for decades and have never felt better, but an equal amount of dieticians who say they are essential.

Help?
gpt
Your brain and body run on sugar. Which is a carbohydrate. If you do not consume them directly then your body will process sugars out of protein and fats. 

It is virtually impossible to eat zero carbs, as even meat has carbs (it is what allows it to brown) but you can eat an extremely low carb diet. As to if this is better, that depends on the person. Every individuals needs are unique and the diet that is best for them will not match what is best for the next person.  There is no singular diet that everyone should eat.