Peter Attia· MD
cohort studies can just as easily although more time consumingly be prospective so you could say I want to follow people over the next five years ten years who use saunas and compare them to a similar number of people who don't and now in a forward-looking fashion we're going to be examining the other behaviors of these people and ultimately what their outcomes are do they have different rates of death heart disease cancer Alzheimer's disease other metrics of Health that we might be interested in again we're not intervening there's not an experiment per se we're just observing but now we're doing it as we March forward through time