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?
Of course not, and put in those terms diets seem even more ridiculous. "Everybody should have a different plan," White says. "There are so many factors that go into a meal plan: your exercise levels, your weight, your past history, your food likes and dislikes, your food allergies, how you tolerate certain macronutrients." No diet is one-size-fits-all, and it's important to pay attention to how your body responds to different ways of eating.