What are the six healthy foods recommended by the International Health Organization?

The six healthiest foods are the best vegetables, the best fruits, the best meat, the best cooking oil, the best soup and the best brain-protecting food.

The "best vegetables" on the list are 13: sweet potato cabbage, celery, carrot, asparagus, cauliflower, eggplant, beet, shepherd's purse, kohlrabi, Flammulina velutipes, snow red and Chinese cabbage.