My guess is such a study would end up recommending what is already known to be good for our health. Yet most people refuse to do it because it takes effort. Exe

My guess is such a study would end up recommending what is already known to be good for our health. Yet most people refuse to do it because it takes effort. Exercise your body and your mind. Keep your weight in check. Don't smoke. Don't drink much. Eat a variety of foods and avoid junk food. Once you've done those, then maybe there is some supplement that might squeeze out a little more benefit. It reminds me of cycling "weight weenies" -- people who obsess every gram on their bike frame, eg spending 3x for their caliper brakes because it uses an alloy that saves 20g. Yet most of them are 30 lbs/15kg overweight. They should lose the weight and only then worry about a few hundred grams from their bike frame. Additionally, losing that weight would pay all sorts of dividends unrelated to biking.