Yam is sweet in taste and smooth in nature. It enters the lung, spleen and kidney meridians; it is not dry and not greasy. The efficacy of spleen and stomach weakness, fatigue and weakness, loss of appetite, chronic dysentery, lung qi deficiency and dryness, phlegm cough, kidney qi deficiency, waist and knee weakness, weak lower limbs, diminished thirst, frequent urination, nocturnal emission, premature ejaculation, white turbidity, Red and swollen skin, obesity and other diseases. The anthocyanins contained in blueberries are the highest among 41 common fruits and vegetables in the world. Therefore, the World Food and Agriculture Organization recommends blueberries as one of the world's top five healthy foods and is known as the "golden berry" and the "king of fruits". , Japan calls it "vision fruit". Blueberries are also called "oral skin cosmetics." The anthocyanins in blueberries improve skin elasticity, reduce skin diseases and wrinkles, even eliminate scars, remove stains, and whiten skin. Anthocyanin's dual protection from the inside out can prevent the early appearance of skin wrinkles, and make the skin smooth and elastic for a long time. "