CaptionWhile the slimming effects of fad diets might seem appealing, almost all of them are more likely to trigger long-term health issues than long-term weight loss. The others? Well, they just sound plain weird or limiting. Better You researched the past couple centuries’ trendiest diets to find out how and why they became so popular—and the real results those eating plans brought. Keep reading to find out about 20 that swept America.Getty ImagesThe Blood Type diet is divided into four different plans based on a person’s blood type: type A, B, AB and O. The Type A Diet is called “the cultivator,” and is vegetarian. Type B is “the nomad” and allows for plants and most meats, but cuts out wheat, corn and lentils. Type AB is “the enigma,” which involves little meat and lots of seafood, tofu and grains. Type O is called the hunter. This diet is rich in meat, fruit and vegetables. Experts are more likely to endorse the Blood Type Diet than others on this list—but not because there’s evidence that adjusting your eating habits based on your blood type works. Dietitian Joe Leech told Healthline that any of the recommended blood type diets “would be an improvement for most people, no matter what their blood type is.” Eating lots of fruits and veggies, as recommended in the Type A Diet, or plenty of whole grains in the Type AB Diet, can benefit anyone.
