Carbs, Fats, and the Mortality Maze: What Your Diet Means for Your Life Expectancy Grandma used to constantly say, "Eat your carbs, they give you energy!" but now, personal trainers are encouraging you to stop eating carbs and switch to keto. What gives, then? I stumbled uncovered an intriguing cohort research that may or may not put some of these arguments to rest. But guys, it's data! In addition, data makes me more excited as a medical student than an aerobic workout. The study looked at how
This finding reminds me of the studies that found people who drank a little alcohol lived longer than those who drank no alcohol. Further investigation finds that the no alcohol group included reformed alcoholics, who has already done enough damage to their systems to shorten their life expectancy, and this extra group was enough to skew the figures.
So I think we need to ask: are there reasons to think taking <40% of calories as carbs is selecting for a group with shorter life expectancy? Maybe - anorexia would be one, although I’ve no idea of its prevalence among Japanese men.
The paper makes no mention of considering this sort of thing.
Did you actually read the paper, or just its abstract?
how could he have read the abstract? The link is a science article, not the study.