Roughage is good for the human body, and pregnant women who regularly eat roughage have a lower incidence of miscarriage and preterm delivery of their fetuses. However, mothers-to-be should be careful when selecting coarse grains, not all coarse grains are suitable. So what are the coarse grains that mothers-to-be can’t do without during pregnancy? Below, for you to focus on recommending three coarse grains. First, sweet potatoes Whether southern and northern, sweet potatoes are more common. It is also called sweet potato or groundnut. Sweet potato is rich in starch, its amino acids, vitamins A, B, C and fiber content are higher than rice and white flour. It is also rich in essential minerals such as iron and calcium, making it a nutritionally complete longevity food. The United States and Japan scientists joint research shows that sweet potatoes contain estrogen-like substances, pregnant women can be consumed after the skin white and delicate. Sweet potatoes contain mucin, a mixture of polysaccharides and proteins, belonging to the collagen and mucopolysaccharides. This substance promotes the excretion of cholesterol, prevents cardiovascular fat precipitation, maintains the elasticity of arterial blood vessels, and thus can effectively protect the heart and prevent cardiovascular disease. Therefore, sweet potatoes are nutritious health food for pregnant women. Second, corn corn is not only good taste, and its benefits are unexpected. Corn is rich in magnesium, unsaturated fatty acids, crude protein, starch, minerals, carotene and other nutrients. Yellow corn seed, also known as yellow plant food. It is rich in magnesium. Magnesium can help vasodilatation, strengthen the peristalsis of the intestinal wall, increase bile, promote the excretion of waste products in the body, and facilitate the body’s metabolism. It is also rich in glutamic acid and other amino acids needed by the body, can promote the metabolism of brain cells, is conducive to the elimination of ammonia in the brain tissue. Red corn seeds are mainly characterized by being rich in vitamin B2. Pregnant women can prevent and treat riboflavin deficiency such as stomatitis, lingual inflammation and mouth ulcers by eating it regularly. Cornhusk decoction water to drink as tea has the effect of diuretic, antihypertensive, clearing heat, eliminating food, stopping bleeding, stopping diarrhea and so on. Can be used to prevent and treat hypertensive syndrome of pregnancy, inflammation of the liver and gallbladder, as well as indigestion and other diseases. Third, buckwheat buckwheat for some mothers-to-be may not be very familiar with, but it is a very good pregnancy grain. It is also called sweet buckwheat, oat, flower buckwheat, more than other cereals to provide a full range of proteins, is a good choice for vegetarians. Buckwheat protein is rich in what is known as the body’s first essential amino acid lysine component, which can promote fetal development, enhance the immune function of pregnant women Buckwheat in the iron, manganese, zinc and other trace elements and dietary fiber content than the average cereal grains are rich in vitamin E, niacin and rutin (rutinoside). Rutin has to reduce human blood lipids and cholesterol, soften blood vessels, protect vision and prevent cerebrovascular hemorrhage; niacin can promote the body’s metabolism, enhance the ability to detoxify, reduce blood cholesterol. Buckwheat scarf rich in magnesium can promote fibrinolysis, vasodilatation, inhibit the formation of clots, anti-thrombotic and reduce serum cholesterol. These nutrients are very meaningful to pregnant women. Special note: coarse grains must not eat too much, because too much consumption of coarse grains not only can not promote digestion, but also affect the digestion and absorption. From the perspective of coarse grains should be coarse food fine, more conducive to health. And eat coarse food can not and dairy products, iron or calcium supplement food or medicine together, the best interval of about 40 minutes.