the medical/nutritional science is slowly understanding that typical diet enjoyed in western societies is NOT proper for human consumption. excessive consumption calories (leading to heart disease) is just one part of the problem.
the modern living is based on narcotics such as sugar, caffeine, alcohol and cigarettes. these mood altering substances along with brainless media habits (tv, tabloids, video games, bad porn) allow people to maintain a fragile balance of "well being" and "feeling good" while their bodies are turned into a biological wasteland.
the consecuences of unhealthy diet are well documented, but people are unwilling to take responsibility for their own health and well-being. instead they are turning to doctors for help, who in turn prescribe designer drugs to combat "tiredness", "attention deficit", "compulsive shopping" and other problems originating from poor health.
a typical person in today's society thinks that he can go on popping Bic Macs & soda and drive around in a car all day, still maintaining good health. of course we look healthy compared to Third Worlders dying like flies.
just because you have never experienced normal health (genetic birthright to most living beings) doesn't mean it's not worth striving for. i'm not saying it's not hard in the middle of our human-constructed reality, though..
myself, i've been "living on the fast lane" for my entire life (sugar (in form of soft drinks) and meat/white bread-dominated diet since kid, almost no exercise, stressful job in IT business, caffeine, the whole geek thing). costs of this hubris are high: severe food allergies, fatigue, depression, problems with studies..
this summer i finally did some research on nutrition and health, and after reading a few books it was not hard to stop craving for coffee, sugar and alcohol.
i'm not on a diet. it's just that when i see something containing sugar, i know the pros and cons of eating it. usually this means that i'm happy to not eat it.
people think that healthy lifestyle equals throwing away the joys of living, and that they'd rather take a shorter, more enjoyable life.
when i think of how much fun there's to be had interacting with people & nature, experiencing/creating music/art/games, eating proper food, practicing sex, being healthy while doing all this.. i have to say that's the most stupid thing i've heard in my entire life.
i've noticed some people realize these things by themselves when they get old. my grandma is one of them. myself, i had to read books to get it.