NutrientsSliced whole wheat bread image
Grains are important sources of many nutrients, including dietary fiber, several B vitamins (thiamin, riboflavin, niacin, and folate), and minerals (iron, magnesium, and selenium).
Dietary fiber from whole grains or other foods, may help reduce blood cholesterol levels and may lower risk of heart disease, obesity, and type 2 diabetes. Fiber is important for proper bowel function. It helps reduce constipation and diverticulosis. Fiber-containing foods such as whole grains help provide a feeling of fullness with fewer calories.
The B vitamins thiamin, riboflavin, and niacin play a key role in metabolism – they help the body release energy from protein, fat, and carbohydrates. B vitamins are also essential for a healthy nervous system. Many refined grains are enriched with these B vitamins.
Folate (folic acid), another B vitamin, helps the body form red blood cells. Women of childbearing age who may become pregnant should consume adequate folate from foods, and in addition 400 mcg of synthetic folic acid from fortified foods or supplements. This reduces the risk of neural tube defects, spina bifida, and anencephaly during fetal development.
Iron is used to carry oxygen in the blood. Many teenage girls and women in their childbearing years have iron-deficiency anemia. They should eat foods high in heme-iron (meats) or eat other iron containing foods along with foods rich in vitamin C, which can improve absorption of non-heme iron. Whole and enriched refined grain products are major sources of non-heme iron in American diets.
Whole grains are sources of magnesium and selenium. Magnesium is a mineral used in building bones and releasing energy from muscles. Selenium protects cells from oxidation. It is also important for a healthy immune system.
NutrientsSliced whole wheat bread imageGrains are important sources of many nutrients, including dietary fiber, several B vitamins (thiamin, riboflavin, niacin, and folate), and minerals (iron, magnesium, and selenium).Dietary fiber from whole grains or other foods, may help reduce blood cholesterol levels and may lower risk of heart disease, obesity, and type 2 diabetes. Fiber is important for proper bowel function. It helps reduce constipation and diverticulosis. Fiber-containing foods such as whole grains help provide a feeling of fullness with fewer calories.The B vitamins thiamin, riboflavin, and niacin play a key role in metabolism – they help the body release energy from protein, fat, and carbohydrates. B vitamins are also essential for a healthy nervous system. Many refined grains are enriched with these B vitamins.Folate (folic acid), another B vitamin, helps the body form red blood cells. Women of childbearing age who may become pregnant should consume adequate folate from foods, and in addition 400 mcg of synthetic folic acid from fortified foods or supplements. This reduces the risk of neural tube defects, spina bifida, and anencephaly during fetal development.เหล็กที่ใช้ในการขนส่งออกซิเจนในเลือด หญิงวัยรุ่นและผู้หญิงในปีการเจริญพันธุ์จำนวนมากมีโรคโลหิตจางขาดธาตุเหล็ก พวกเขาควรรับประทานอาหารสูงใน heme เหล็ก (เนื้อ) หรือกินเหล็กอื่นที่ประกอบด้วยอาหารพร้อมอาหารที่อุดมด้วยวิตามิน C ซึ่งสามารถปรับปรุงการดูดซึมของเหล็ก-heme ผลิตภัณฑ์ทั้งหมด และอุดมกลั่นข้าวเป็นแหล่งสำคัญของ-heme เหล็กในอาหารอเมริกันธัญพืชเป็นแหล่งของแมกนีเซียมและซีลีเนียม แมกนีเซียมเป็นแร่ธาตุที่ใช้ในการสร้างกระดูก และปล่อยพลังงานจากกล้ามเนื้อ ซีลีเนียมช่วยป้องกันเซลล์จากการเกิดออกซิเดชัน เป็นสิ่งที่สำคัญสำหรับระบบภูมิคุ้มกันมีสุขภาพดี
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