Leafy green vegetables are some of the healthiest foods in the world, according to WebMD. This includes spinach, kale and turnip greens.
Flaxseed is another very healthy food. They are rich in fiber, and believed to help protect people against certain cancers. All types of beans and legumes are also healthy foods, including black beans, dried peas and soybeans. Vegetables and fruits are also good options when it comes to a person adding healthy foods to their diet. Fruits and vegetables are rich in many vitamins and minerals, with some even containing antioxidants that prevent against many diseases.