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The Best Natural Sources of Manganese

nuts

By Michael Ravensthorpe

Manganese is a trace mineral that is present in only small amounts in our bodies. It is considered an essential nutrient and is responsible for a large number of biological roles, including proper enzyme functioning, wound healing, nutrient absorption and bone development. Manganese is also a component of the antioxidant enzyme superoxide dismutase (SOD), which helps fight cell-damaging free radicals.

According to the University of Maryland Medical Center, up to 37 percent of the American population fails to meet the recommended daily intake (RDI) of manganese, which is 2.3 milligrams for adult men and 1.8 milligrams for adult women. Over time, this can lead to deficiency symptoms such as joint pain, poor bone health and fertility problems. Therefore, it’s important that we eat enough foods rich in manganese to maintain our health.

Excellent sources of manganese

Seafood — Though seafood is best-known for its rich concentrations of zinc, it is also one of the world’s finest sources of manganese. In first place is mussels, which provide us with 5.8 milligrams of manganese, or 340 percent of our RDI, per 85 grams. Next on the list is clams (43 percent of our RDI per 85 grams), followed by crawfish (22 percent of our RDI per 85 grams). Regular fish such as bass, trout, pike and perch are also excellent sources of manganese, with 85 grams of each providing us with between 38 and 48 grams of our RDI. Avoid contaminated seafood by favoring sustainably farmed produce sourced from the Atlantic Ocean.

Nuts — Nuts are one of the best sources of manganese for vegetarians and vegans. One 28 gram serving of hazelnuts, for instance, supplies us with 78 percent of our RDI. Pecans, macadamia nuts and walnuts also contain over 40 percent of our RDI per 28 grams. Other nuts, such as almonds, cashews and pistachios, contain fewer (but still high) concentrations of manganese.

Aside from their manganese content, nuts are also a good source of omega-3 fatty acids, vitamin E, plant sterols (which are known to reduce LDL cholesterol) and L-arginine, a semi-essential amino acid that can boost cardiovascular function. Some people like to soak their nuts in water before eating them, since soaking mimics the natural germination process that occurs in nature, which helps neutralize anti-nutrients and activate certain enzymes.

Seeds — Seeds often contain similar nutritional profiles to nuts, so it isn’t surprising that they’re also high in manganese. Pumpkin seeds seem to be the best source, containing 1.3 milligrams of the mineral (64 percent of the RDI) per 28 gram serving. Chia seeds, sesame seeds, flaxseeds and sunflower seeds are also excellent sources, with one 28 gram serving of each providing us with at least 30 percent of our RDI of manganese.

Seeds also tend to be rich in zinc, magnesium and beneficial plant compounds called phytosterols,. Like nuts, seeds (especially chia seeds) benefit from being soaked in water before consumption.

Beans — Beans are one of the longest-cultivated crops and have been an important source of protein throughout the Old and New World. They are also consistently high in manganese. Half of a cup (85 grams) of lima beans and winged beans, for example, contain just over half of our RDI. Chickpeas, adzuki beans and white beans are packed with manganese as well.

Other excellent sources of manganese include leafy green vegetables such as spinach and kale, most dried herbs and spices (especially cloves), rice bran, garlic, blackstrap molasses and sun-dried tomatoes. Most whole foods contain small amounts of manganese, however, which is why people who eat a diet rich in organic whole foods are rarely deficient in it.

Sources:

http://lpi.oregonstate.edu

http://umm.edu

http://www.healthaliciousness.com

http://www.mayoclinic.org

http://www.yogitrition.com

Michael Ravensthorpe is an independent writer whose research interests include nutrition, alternative medicine, and bushcraft. He is the creator of the website, Spiritfoods, through which he promotes the world’s healthiest foods.

The NaturalNews Network is a non-profit collection of public education websites covering topics that empower individuals to make positive changes in their health, environmental sensitivity, consumer choices and informed skepticism. The NaturalNews Network operates without a profit incentive, and its key writer, Mike Adams, receives absolutely no payment for his time, articles or books. The NaturalNews Network is not for sale, and does not accept money to cover any story (or to spike it). NaturalNews Network is what the news industry used to be, before it sold out to big business.

This information has been made available by Ready Nutrition

Originally published January 9th, 2015
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