The author investigates and personally tries many ways to remain young, some of them expected and some quite surprising or relatively unknown. Of course many of the things she does are behaviors you've always been told will keep you healthy: eating unprocessed food, consuming more fruits and vegetables and, of course, exercise. Turns out these will also keep your body young. The goal is to keep your body healthy into old age and then suddenly die quickly, ideally in your sleep (and in bed with your much younger lover). Warning: don't do it because Madison Avenue tells you to, do it because you want to be healthy.
Kessler learns about many different philosophies of eating with the goal of keeping you young for as long as possible. These include the idea of eating fewer calories than necessary-that is, semi-starving yourself for life. In studies, this practice has been shown to maintain the health and increase the longevity of rodents, but no studies have been done on humans. Guess they can't find volunteers to be hungry the rest of their lives. No one would want to be around them, they'd always be so crabby.
She speaks with experts about the various food-specific diets that have you eat or avoid certain things. We also visit the big world of supplements. A lot of it seems natural, altruistic (they only want to make you feel better) and kind of hippie-granola-crunchy, but it is a big business with very little oversight.
And we can't forget detoxification. Apparently we all need to do it, according to the popular press. The scientific community thinks it's a load of bunk, and questions what it means and whether it is an effective or healthy activity.
Spoiler alert (but not really): Kessler finds that the things that work best to keep you young also keep you healthy and are the things your mother nagged you to do (or she should have). Don't eat junk food! Get off the couch and get some exercise! Don't let the TV turn you into a zombie (for real-brain activity and positive thinking can help keep you young and healthy)! Now go call your mom and thank her.
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