Keto Means
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Prune juice, olives and mulberries are the three types of fruit with the highest iron concentration per portion. These fruit also contain antioxidants and a variety of other nutrients beneficial to health.
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Read More »11–13 Fruit Fruit is not commonly the food group that individuals turn to when wanting to increase the iron content of their diet. Nevertheless, some fruits are surprisingly high in iron. Here are the best sources of iron in this category. 11. Prune juice Prunes are known for their mild laxative effect, which helps relieve constipation (50). However, they’re also a good source of iron. Prune juice, in particular, offers about 2.9 mg of iron per cup (8 ounces, or 237 mL). That’s around 16% of the DV and is twice as much iron as the same quantity of prunes ( 51 , 52 ). Prune juice contains fiber, potassium, vitamin C, vitamin B6 and manganese, too. 12. Olives Olives are technically a fruit, and one with a good iron content at that. Black olives contain around 6.3 mg of iron per 3.5 ounces (100 grams), or 35% of the DV. In addition, fresh olives are also a great source of fiber, good fats and fat-soluble vitamins A and E ( 53 ). Olives also contain oleuropein, a beneficial plant compound thought to provide several health benefits, including a lower risk of heart disease (54, 55). 13. Mulberries Mulberries are a type of fruit with a particularly impressive nutritional value. Not only do they offer around 2.6 mg of iron per cup — 14% of the DV — but this quantity of mulberries also meets 57% of the DV for vitamin C ( 56 ). Mulberries are a great source of antioxidants as well, which may offer protection against heart disease, diabetes and some forms of cancer ( 57 ). Summary: Prune juice, olives and mulberries are the three types of fruit with the highest iron concentration per portion. These fruit also contain antioxidants and a variety of other nutrients beneficial to health. 14–17: Whole grains Research links whole grains to a variety of health benefits. These benefits include increased longevity and a reduced risk of obesity, type 2 diabetes and heart disease ( 58 , 59 ). However, not all grains are equally beneficial. For instance, grain processing typically removes parts of the grain that contain fiber, antioxidants, vitamins and minerals, including iron. For this reason, whole grains typically contain more iron than processed grains. The following are the four types of whole grains containing the most iron per portion. 14. Amaranth Amaranth is a gluten-free ancient grain that doesn’t grow from grasses like other grains do. For this reason, it is technically considered a “pseudocereal.” Amaranth contains around 5.2 mg of iron per cup cooked (246 grams), or 29% of the DV ( 60 ). Interestingly, amaranth is one of the few complete sources of plant proteins and also contains good amounts of complex carbs, fiber, manganese, phosphorus and magnesium. 15. Spelt Spelt is another iron-rich ancient grain. It contains around 3.2 mg of iron per cup cooked (194 grams), or 18% of the DV. Moreover, cooked spelt offers around 10 grams of protein per cup (61). Spelt contains a variety of other nutrients, too, including complex carbs, fiber, magnesium, zinc, selenium and B vitamins. Its protein and mineral content may also be slightly higher than more conventional grains (62). 16. Oats Oats are a tasty and easy way to add iron to your diet. A cup (234 grams) of cooked oats contains around 1.2 mg of iron — 12% of the DV — as well as good amounts of plant protein, fiber, magnesium, zinc and folate ( 63 ). What’s more, oats contain a soluble fiber called beta-glucan, which may help promote gut health and reduce cholesterol and blood sugar levels ( 64 , 65 , 66 ). 17. Quinoa Like amaranth, quinoa is a gluten-free pseudocereal rich in complete protein, fiber, complex carbs, vitamins and minerals. It offers around 2.8 mg of iron per cup cooked (185 grams), or 16% of the DV. Plus, research links quinoa’s rich antioxidant content to a range of health benefits, such improved glucose tolerance in people with type 2 diabetes. These metabolic effects could also lower your risk of cardiovascular disease ( 67 , 68 , 69 ). Summary: Whole grains generally contain more iron than refined grains. The varieties listed above are particularly rich in iron but also contain several other nutrients and plant compounds beneficial to health. 18–21: Other Certain foods do not fit in one of the food groups above, yet contain significant amounts of iron. Incorporating them into your diet can help you meet your recommended daily iron intakes. 18. Coconut milk Canned coconut milk can be a rich and flavorful addition to your cooking. Although very high in fat, it’s a good source of several vitamins and minerals, including magnesium, copper and manganese ( 70 ). Canned coconut milk also contains a good amount of iron — more specifically, around 7.5 mg per cup (226 grams), or around 42% of the DV. Note that ready-to-drink coconut milk is not the same thing as canned coconut milk. The former is a dairy milk substitute that comes in in a carton and is meant to be consumed as-is, while the latter is a thicker canned product usually used in cooked foods. Coconut milks that are found in the supermarket refrigerator with other dairy alternatives typically contains very little iron ( 71 ). 19. Dark chocolate Dark chocolate contains significantly more nutrients than its milk chocolate counterpart. Not only does it offer 3.4 mg of iron per ounce (28.4 grams), meeting around 19% of the DV, but it also contains a good amount of fiber, magnesium, copper and manganese ( 72 ). Additionally, dark chocolate is a powerful source of antioxidants, a group of beneficial plant compounds that help protect against various diseases ( 73 ). 20. Blackstrap molasses Blackstrap molasses is a sweetener often claimed to be healthier than table sugar. In terms of iron, it contains around 1.9 mg of iron per two tablespoons, or around 11% of the DV ( 74 ). This portion also helps cover between 12–26% of your recommended daily intake of copper, selenium, potassium, vitamin B6, magnesium and manganese. However, despite its higher nutrient content, blackstrap molasses remains very high in sugar and should be consumed in moderation. 21. Dried thyme Dried thyme is one of the most popular culinary herbs. Many consider this plant a nutritional powerhouse, and research has linked thyme extracts and oils to health benefits ranging from fighting bacterial infections and bronchitis to improving your mood ( 75 , 76 , 77 ). Thyme also happens to be one of the herbs with the highest iron content, offering 1.2 mg per dried teaspoon (1 gram), or around 7% of the DV ( 78 ). Sprinkling a little on each meal may be a good strategy for those wanting to increase their iron intake. Summary: Coconut milk, dark chocolate, blackstrap molasses and dried thyme are lesser known, yet undoubtedly rich, sources of iron.
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Read More »How to increase iron absorption from plant foods The heme iron found in meat and animal products is generally more easily absorbed by the human body than the non-heme iron found in plants. For this reason, the RDA for iron is 1.8 times higher for vegetarians and vegans than those who eat meat ( 3 ). This amounts to approximately 14 mg per day for men and post-menopausal women, 32 mg per day for menstruating women and 49 mg per day for pregnant women ( 3 ). However, there are various strategies that can be employed to increase the body’s ability to absorb non-heme iron. Here are the best-researched methods: Eat vitamin C-rich foods: Consuming vitamin C-rich foods together with foods rich in non-heme iron may increase the absorption of iron by up 300% (1). Consuming vitamin C-rich foods together with foods rich in non-heme iron may increase the absorption of iron by up 300% (1). Avoid coffee and tea with meals: Drinking coffee and tea with meals can reduce iron absorption ( 79 , 80 ). Drinking coffee and tea with meals can reduce iron absorption ( , ). Soak, sprout and ferment: Soaking, sprouting and fermenting grains and legumes can improve iron absorption by lowering the amount of phytates naturally present in these foods ( 81 ). Soaking, sprouting and fermenting grains and legumes can improve iron absorption by lowering the amount of phytates naturally present in these foods ( ). Use a cast iron pan: Foods prepared in a cast iron pan may provide more iron compared to those prepared in non-iron cookware ( 82 ). Foods prepared in a cast iron pan may provide more iron compared to those prepared in non-iron cookware ( ). Consume lysine-rich foods: Consuming plant foods like legumes and quinoa that are rich in the amino acid lysine together with your iron-rich meals may increase iron absorption (83). Summary: The type of iron found in plant foods (non-heme) is less easily absorbed by the body. The methods outlined here can be used to maximize its absorption.
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