2, eating tomatoes in daily life can play a certain role in sun protection. Because tomatoes are rich in lycopene, lycopene is an antioxidant, which can effectively prevent the damage of ultraviolet rays and radiation to skin cells, resulting in the inability to produce melanin, so that the skin will not turn black. Yam is rich in amylase, which helps digestion and can also be used to treat spleen and stomach weakness and diarrhea.