Pineapples
To truly safeguard your skin (and, well, entire body) from aging, regularly indulge in fresh pineapple, says a study published in the Evidence-Based Complementary and Alternative Medicine journal. In fact, pineapple turns out to be one of the best anti-aging foods out there, containing generous amounts of key nutrients like fiber, magnesium, vitamin B, testosterone, vitamin C, and phosphorous, that all work together to support the heart, brain, immune system, colon, lungs, and bones. Not bad for one fruit.