Intermittent ketogenic diets in mice, requiring very low carbohydrate intake (1% or less), can increase lifespan by approximately 15% and may offer healthspan benefits.

“there there was about a i think a 15 percent increase in lifespan and i'm sorry what did they do on the other days the animals a regular diet sorry regularly yeah so it was just back and forth between the control diet and the ketogenic diet yeah yeah and that didn't result in caloric restriction the that's the thing the mice were calorically restricted so it's in some ways it's a intermittent caloric restriction right and this is what i would say it's also interesting because the fasting mimicking diet papers are intermittent ketogenic diets so so i think that you know maybe that's one thing to agree on is that intermittent ketogenic diets in mice can increase lifespan and seem to have benefits for health span”