Many! There are many, many healthy foods. It's easier to answer what's not healthy. Unhealthy foods include most fast foods, foods that are heavily processed, foods that include artificial colors, flavors, sweeteners and preservatives, foods that are excessively salty, foods that are fried, and the list goes on. Basically, if it comes out of the dirt and isn't spayed with toxins, it's probably good.
Vitamins. The best foods seeds and nuts, blueberries, kiwi fruit, grapes, strawberries, acai fruit due to the contens of flavinoids, resveratrol, lycopens and antioxidants. Now, vitamins in my opinion is the vitamin d witch is in the sun exposure in young people and otc preparations of cholecalciferol for its properties against cancer, beneficial for copd, anti osteoporosis and osteomalacia.