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Re:Study: Low Carb Diet May Prevent, Reverse Age-Related Eff... by 1_player on Saturday March 07, 2020 @01:56AM (#22510231)
Carbs is not the only fuel. Fats can be used as well. Proteins too, in case of emergency.

The rule of thumb is proteins and fats are essential, carbs are not. How much of each is still up for debate.

Re:Study: Low Carb Diet May Prevent, Reverse Age-Related Eff... by dnhz on Sunday March 08, 2020 @04:49PM (#22520514)
I'd just say that what's essential to eat (>50-60 g protein/day and a few grams of omega-3s) is different from what's optimal (what ratio of fat/carbs/protein).