7. Green Tea
This ancient beverage has been recently co-opted by the diet industry, which makes it seem gimmicky. While green tea diet pills are certainly worth being wary of, plain green tea is not. There is research showing that it can boost your basic metabolic rate by 3 to 4 percent, “and it’s profoundly anticancer,” says Talbott, thanks to compounds called catechins. In fact, research in the journal Cancer Prevention found that daily green tea consumption could delay the onset of cancer by more than seven years for women and three years for men. A large-scale population study published earlier this year in Cancer Science followed nearly 90,000 Japanese citizens for more than a decade and found that those who drank large amounts of green tea had lower risks for biliary tract cancer, gallbladder cancer, and bile duct cancer.