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Roughly 5 grams of iron are present in the human body and is the most abundant trace metal. [1] It is absorbed in the intestine as heme or non-heme iron depending on the food source. Heme iron is derived from the digestion of hemoproteins in meat. [4] Non-heme iron is mainly derived from plants and exist as iron(II) or iron(III) ions. [4]
There are concerns about the bioavailability of iron from plant foods, assumed by some researchers to be 5–15 percent compared to 18 percent from a non-vegetarian diet. [110] Iron-deficiency anemia is found as often in non-vegetarians as in vegetarians. Vegetarians' iron stores are lower. Lower iron stores may increase the risk for iron ...
Absorption of dietary iron in iron salt form (as in most supplements) varies somewhat according to the body's need for iron, and is usually between 10% and 20% of iron intake. Absorption of iron from animal products, and some plant products, is in the form of heme iron, and is more efficient, allowing absorption of from 15% to 35% of intake.
It's true that red meat is an excellent source of iron, but there are plenty of vegetarian sources of iron — think leafy green vegetables, beets, black beans and lentils, says Cunningham.
While it does contain more iron than many vegetables such as asparagus, Swiss chard, kale, or arugula, it contains only about one-third to one-fifth of the iron in lima beans, chickpeas, apricots, or wheat germ. Additionally, the non-heme iron found in spinach and other vegetables is not as readily absorbed as the heme iron found in meats and fish.
Feeling wiped out at the end of the day is par for the course for most of us, thanks to logging long hours at the office and juggling overloaded weekend schedules. But if you can't make it through ...
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A variety of vegetarian, and more specifically vegan, foods. Vegetarian nutrition is the set of health-related challenges and advantages of vegetarian diets.. Appropriately planned vegetarian diets are healthful and nutritionally adequate for all stages of the human life cycle, including during pregnancy, lactation, infancy, childhood, and adolescence. [1]