Chestnuts have another good name, the "king of nuts,"and in foreign countries they are also known as the "ginseng fruit." Sweet and fragrant chestnuts have been a leader among nuts and regarded as a precious fruit since ancient times .chestnuts can replace the grain, with the dates, persimmons,are called "hard-core crops," "tree food" .Chestnut is a nutritious tonic . Nutritional Value Of per 100 grams of chestnuts,there are 5.7 grams of protein,2 grams of fat , 40 to 45 grams carbonhydrates and 25 grams of starch .The vitamin content of uncooked chestnuts can be as high as 40 60g,and the cooked is about 25g.Besides, chestnuts are rich in calcium, phosphorus, iron, potassium and other inorganic salts, and carotene, B vitamins and other ingredients. 1, chestnuts contain rich unsaturated fatty acids ,vitamins and minerals.These materials can prevent hypertension, coronary heart disease, arteriosclerosis, osteoporosis and other diseases.It is a kind of anti-aging, longevity-keeping tonic . 2, chestnut contains riboflavin, and eating chestnuts frequently is helpful for refractory pediatric and adult mouth ulcers. 3, Chestnut is a kind of dried fruit rich in high carbohydrate content.It can supply the body more heat and can help fat metabolism. In a word,chestnut I has a good effect on human body. 4.Chestnuts are rich in vitamin C, whose benefit is to keep the teeth, bones, blood vessels in normal function.Frequent consumption can prevent osteoporosis, muscles pain and weakness,etc.It also can delay the onset of human aging.So it is the best choice for the elderly.