The 40 Best Age-Erasing Superfoods - Part 5

17. Avocado

Chock full of monounsaturated fat, avocados deliver a double-barreled blast to LDL cholesterol (the bad kind). They are also rich in folate, a water-soluble B vitamin that helps lower the levels of homocysteine, an amino acid that can hinder the flow of blood through blood vessels. Eat a 1/4 cup twice a week, says Greaves.

18. Walnuts

Richer in heart-healthy omega-3s than salmon, loaded with more anti-inflammatory polyphenols than red wine, and packing half as much musclebuilding protein as chicken, the walnut sounds like a Frankenfood, but it grows on trees. Other nuts combine only one or two of these features, not all three. A serving of walnuts—about 1 ounce, or seven nuts—is good anytime, but especially as a postworkout recovery snack.

19. Turmeric

Curcumin, the polyphenol that gives turmeric its tang and yellow hue, has anticancer properties, anti-inflammatory effects, and tumor-fighting activities known in nutritionspeak as anti-angiogenesis. Researchers at UCLA have also found that it helps deter the accumulation of amyloid plaques in the brain, tiny blockages that may cause Alzheimer’s disease. Turmeric’s prevalence in India, the researchers suggest, may help explain why so few of the country’s senior citizens have the disease, whereas the statistic is close to 13 percent in the United States, according to the Alzheimer’s Association. One tip: Pair it with pepper in curries. “Adding black pepper to turmeric or turmeric-spiced food enhances curcumin’s bioavailability by 1,000 times, due to black pepper’s hot property called piperine,” says nutritionist Stacy Kennedy of the Dana Farber Cancer Institute.

20. Black Beans

People who eat one 3-ounce serving of black beans a day decrease their risk of heart attack by 38 percent, according to a study in the Journal of Nutrition. And while other beans are also good for your heart, none can boost your brainpower like black beans. That’s because they’re full of anthocyanins, antioxidant compounds that have been shown to improve brain function. They’re also packed with superstar nutrients, including protein, healthy fats, folate, magnesium, B vitamins, potassium, and fiber.