[ksk]

That is rather rude. Your single data point (if we are to be generous and call it data) doesn't change the fact that an overwhelming majority, heck probably 99.9% of humans that ever lived included various sources of carbs in their diets (save famine and other such events), and our bodies have evolved to support such diets. We're here because our ancestors ate carbs. The long term effects of ketogenic diets OTOH are poorly understood. You should make it clear that you're pushing a position based on your opinion, not scientific consensus.

[johnwilkesbooth]

> That is rather rude

Not my intention at all, and honestly I don't see how my comment conveys this.

> Your single data point

Sure, plus the countless others who lead a healthy, low-carb lifestyle.

> 99.9% of humans that ever lived included various sources of carbs in their diets (save famine and other such events), and our bodies have evolved to support such diets

My point wasn't that carbs preclude you from leading a healthy lifestyle, hut rather that they aren't necessarily for leading a healthy lifestyle, as OP's remark suggested.

> We're here because our ancestors ate carbs

Not "because", but "in spite of the fact".

> You should make it clear that you're pushing a position based on your opinion

I'm not "pushing" anything, merely citing a personal experience (my experience, not my opinion).

[ksk]

>Sure, plus the countless others who lead a healthy, low-carb lifestyle.

They are not countless though, people who have at some point in time, experimented with keto or low-carb diets are in the extreme minority (I did as well). And an even smaller subset would be the people who have completely switched over to a keto diet on a long term basis.

>Not "because", but "in spite of the fact".

That is merely an opinion. We can't do the experiment of not having a certain adaptation. Having the option of surviving on a variety of diets, including heavy carb (vegetables/fruits) diets, is definitely an evolutionary strength.

> hut rather that they aren't necessarily for leading a healthy lifestyle, as OP's remark suggested.

But practically speaking, the vast majority of healthy people consume carbs. There is no evidence to suggest that a keto diet is capable of providing the same result - in a large portion of the population (comprising of various genetic makeups and other factors), over a large period of time.

[jshevek]

You are correct on nearly all points, and the parents is wrong in nearly all of their points.

However, I believe they are technically correct that we "are here because our ancestors ate carbs". This is not to say that carbs are healthy or necessary for modern humans, only that our ability to live on a diversity of energy sources was hugely beneficial, and almost certainly necessary, for the survival of our distant ancestors.