Severely limiting your intake of carbohydrates and fats, you may be shortening your lifespan
(www.theinnovativehorizon.com)
What about just carbohydrates and still eating fats?
here is the study directly: https://www.sciencedirect.com/science/article/abs/pii/S0022316623721986?via%3Dihub
food frequency questionnaire (how accurate are old people at reporting "What" they actually ate?)
in this cohort review, Low Carb is <40% of daily food intake as carbohydrates.