maca root
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Nourishing, Nutty Maca

It looks like the love child of a potato and white radish. It grows wild in the frigid ground of the Andes mountains thousands of feet above sea level in Peru. And it has a nutty, slightly butterscotch-y taste. Maca root, which comes from the mustard plant family, is a nutritional powerhouse. But just how super is this superfood?

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maca root and name variations
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Veggie With Many Names

Maca root goes by many names, including maca-maca, maino, ayak chichira and ayak willku. It's also called Peruvian ginseng, which can be misleading because maca is a vegetable and ginseng is an herb. Both have a reputation for giving big boosts of energy. But more research is needed to back this up.

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people of andes mountains
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Ancient Staple

People in the Andes have grown maca for thousands of years. They use the root as a food supplement as well as a traditional medicine for everything from fertility problems to fragile bones and poor memory. In recent years, maca has been popping up more often on health food store shelves.

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Energy Potion

Maca is claimed to be an adaptogenic plant, which means it gives your body the ability to adapt to or resist what's going on in and around it, like anxiety, stress, and depression. Researchers don’t know exactly how maca works on the body. Some scientific evidence suggests that it can give you a shot of energy.

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Maca in the Bedroom

Maca has a reputation as an aid for sex and reproductive issues. Some people believe it can rev up sex drive in men and women, boost sperm count, improve erections, and ease menopausal symptoms. The fact is that those claims are backed by little or no scientific evidence.

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Maca for Women

A small number of studies have suggested that maca may help ease hot flashes and other postmenopausal symptoms in women. But the evidence isn’t robust. Some studies also found that women and men who took maca extracts showed a significant uptick in their self-reported levels of sexual desire. Other studies did not find this effect.

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The Good News

What’s undisputed is maca’s nutritional benefits. It packs high levels of iron and iodine to promote healthy cells and to help keep your metabolism on track. Its big doses of potassium help digestion and make muscles happy. Maca is also rich in calcium, amino acids, vitamins, and minerals.

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capsules and powder
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Powder or Pill

Peruvians dry maca naturally and then boil it and drink the juice. As a supplement, maca is sold as a powder you can add to foods or drinks. It also comes as gelcaps.

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How Much Maca?

We don’t have enough research to know how much is safe and how much you need to benefit from it. Maca supplements can vary widely in quality and their active ingredients. Bottom line is that there is no standard dose.

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pregnant woman
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Maca Safety

Maca is generally considered safe as a food or as a supplement if you don’t take more than 3 grams (less than a teaspoon) a day for up to 4 months. But more tests are needed to know if and at what doses it can cause harm in pregnant or nursing women, children, or people with liver or kidney diseases.

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From Peru to You

You can buy maca in powder or capsule form at health food stores, specialty grocery stores, and through various vendors online. 

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man making smoothie
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How to Take It

To get the most out of your maca, don't bake with it or add it to hot foods or drinks -- it loses its nutritional punch. Work it into raw foods instead, like no-bake energy treats or smoothies, or put it on top of cooked foods, like oatmeal.

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psa blood test
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Caution

If you're on blood thinners, maca may not be right for you. It has so much vitamin K -- which helps your blood form clots -- that it may counteract your medication. Ditto that for men with elevated blood PSA (prostate specific antigens), who should stay away from maca. The plant’s extracts might act like estrogen, so avoid it if you have hormone-sensitive conditions like breast, uterine, and ovarian cancers or endometriosis.

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Sources | Medically Reviewed on 05/15/2018 Reviewed by Melinda Ratini, DO, MS on May 15, 2018

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SOURCES:

Cleveland Clinic: "How Maca May Help Your Find a Healthy Balance (Infographic),” “Natural Products: Western Herbs Traditional Chinese Herbs Supplements Vitamins & Minerals.”

Memorial Sloan Kettering Cancer Center "Maca.”

Texas Stroke Institute: "Maca.”

National Center for Complementary and Integrative Health: "Ginseng.”

U.S. National Library of Medicine, National Institutes of Health: "Ethnobiology and Ethnopharmacology of Lepidium meyenii (Maca), a Plate from the Peruvian Highlands.”

Texas Children's Hospital: "Is Maca Root The Viagra For Menopausal Women?"

Phytotherapy: “Adaptogenic Plants.”

Maturitas: “Maca (Lepidium meyenii) for treatment of menopausal symptoms: A systemic review.”

Reviewed by Melinda Ratini, DO, MS on May 15, 2018

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.