I'm not trying to sell any diets; there's too much controversy on which one works, and which one is pseudoscientific bullshit. I don't even buy the natural, or traditional diet, the one that Michael Pollan pushes: "Eat food. Not too much. Mostly plants." I know most of the processed foods have all kinds of icky preservatives in them, and I know soda will rot you from the inside. But why worship the traditional diet? Traditionally, the average life-span is shorter than it is today. Show me a culture that lives to 120 and I will eat whatever they are having.
Aside: lobsters show negligible senescence and can live to well over 100. Too bad for them they are so delicious. Too bad for us we don't get that longevity by eating them.
140 yr old lobster about to be interrogated on the secrets of its longevity.
The point remains: whether you are anti-fat, pro-carbs, or pro-starving-yourself, you can live better just by tweaking your lifestyle. A bit of exercise is good. Learn to cook, or dance, or play Guitar Hero. Be happy and free yourself from stress. Hang out with friends. Fall in love. It could work. Even if these things don't work, and they don't make you live any longer, well, at least you had fun living.
Merry Christmas. See you in the Future.