Dieting stresses the hell out of you
When you go on a diet, it ends up consuming your every thought. What can I eat? When can I eat it? Who do I have to avoid so that I don't cheat? That's a pretty miserable way to go through life -- eating should be pleasurable, not torture -- plus it creates extra stress, which can exacerbate a weight problem.
"If you’re stressing yourself out way too much with your weight-loss efforts, it’s not going to be sustainable," says Dr. Eduardo Grunvald, program director at UC San Diego's Weight Management Program. When you're stressed, you're more likely to crave sweet food and overeat, which can make you more likely to keep the pounds on. If you're constantly chastising yourself about what you should or shouldn't eat, yeah, you'll probably be more stressed than usual. Plus, it makes you want to give up much more quickly.
People aren't the same, so why would one diet work for everyone?
Here's a (very) brief list of the more notable fad diets in recent history: cabbage soup, grapefruit, low-fat, Atkins, South Beach, Zone, Paleo, vegan. Each is different, yet each claims to be the ideal eating patter. But ideal for whom? Would a 20-year-old man see the same results as a 70-year-old woman?