Intermittent fasting is the most effective way to increase lifespan. It is often found in all organisms from yeast, rats, and humans that reducing food intake by 30% increases life expectancy by 30%, by significantly reducing the oxidative stress levels.
Got any reliable sources for that?
I read of this as well, here's one article discussing it:
https://www.sciencemag.org/news/2017/02/five-day-fasting-diet-could-fight-disease-slow-aging
Having the original study would be great, because this article sounds like it's mostly beneficial because it helps lose weight and people at a healthy weight generally live longer anyway. Can't find a link to the original study though so it might have different results.
I think there's some data on research made on mice and I've heard of it. It'd still be bold to say it'd work on humans, increasing life expectancy by 30% :)
There's no data that shows this in humans, as far as I know. Other animals, yes. But thinking it works in humans is so far just conjecture.