Heavy Metal Chelation: 3 Foods for Natural Detox

by | Jul 24, 2018 | Diet, Health, Minerals, Nutrition | 3 comments

We are exposed to potential toxins, such as heavy metals, daily, no matter what we do. So why not also cook with foods that naturally help remove heavy metals from the body, a process known as heavy metal chelation? This article briefly discusses heavy metal toxicity in seafood and three foods for natural heavy metal chelation, then combines them in a recipe!

Raw salmon with herbs

Heavy metal toxicity and fish

Seafood, and most prominently, fish, is an important source of protein and is rich in essential minerals, vitamins, and unsaturated/essential fatty acids (EFAs). Yet it is just this nutrient-dense lipid content that can also pose the greatest harm, requiring the process of heavy metal chelation.

Fish that contain the highest amounts of fat are potentially the most healthy (e.g., salmon, mackerel, herring, trout, sardines, and albacore tuna contain the highest amounts of EFAs). (1) But many of these same fish also can contain the highest heavy metal concentrations, specifically because heavy metals have an affinity for being sequestered in fat.

Currently, some of the fish highest in methylmercury are king mackerel, marlin, orange roughy, shark, swordfish, tilefish, ahi tuna, and bigeye tuna. (2) In fact, it is recommended that women who are pregnant or trying to conceive avoid these types of fish. (3) Although the American Heart Association recommends eating fish at least twice a week to achieve the recommended daily omega-3 fatty acid status, this can backfire if we aren’t careful about where we source our seafood and which types we consume. (4)

Hazy industrial skyline with towers spewing toxic plumes

Heavy metal chelation and mercury

The most famous heavy metal is mercury, which, in its most harmful form, is methylated. Methylation is a vital metabolic process, meaning some carbon and hydrogen are attached to the mercury atom, making it more bioavailable to living organisms, such as fish swimming in the sea. Over time, then, this toxic methylmercury can concentrate in the fatty tissues of seafood via the ingestion of sediment, seawater, and oceanic food-chain organisms high in methylmercury. (5,6)

One study found that fish muscles contained the least concentrations of heavy metals, while the liver contained the highest amounts of copper, zinc, and iron, and gills contained the highest amounts of lead and manganese. (7) Eating sustainably harvested seafood, such as those provided by Vital Source Seafood, is critical.

Vital Source Seafood only supplies sustainability-certified fish and seafood (Marine Stewardship Council (MSC), State of Alaska, or Monterey Bay Aquarium SeafoodWatch program certified), such as wild-caught Alaskan salmon and northwest Pacific seafood, for a fair price and delivered flash-frozen to your doorstep.

Three foods that help your body with heavy metal chelation

Cilantro on wooden surface

1. Cilantro

The most famous herb for heavy metal chelation is cilantro/coriander, or Coriandrum sativum, which has been specifically shown to help remove mercury, lead, and aluminum from the tissues. (8) Not only that, but it’s an immune-boosting herb.

2. Garlic and onions

Garlic, onion, and shallot are sulfur-rich foods that particularly help remove lead from the body. (9)

Edible bulbs on white background

3. Brazil nuts

Brazil nuts contain high amounts of selenium, which has been shown to reduce metal toxicity. Selenium is critical for making the body’s most important antioxidant, glutathione, which protects from oxidative damage via an enzyme called glutathione peroxidase. (10) Selenium can actively bind methylmercury in the body, rendering it less bioavailable and, therefore, less harmful. (11)

Heavy Metal Chelation Recipe

So why not cook sustainably harvested seafood with naturally chelating herbs and feed two birds with one seed?! 🙂 I decided to sear a filet of wild-caught Alaskan Coho salmon with some of the ingredients mentioned above, and it came out wonderfully.

Seared Coho Salmon with Cilantro and Brazil Nuts

  • ¾ lb filet of wild-caught Alaskan Coho salmon

  • 7 Brazil nuts, finely chopped

  • Cilantro, minced

  • 1 shallot, minced

  • Coconut oil

  • Half a lemon

  • Freshly cracked pepper

  • Pinch of Maldon sea salt

Three Foods for Natural Heavy Metal Chelation: Cilantro, Shallot, Brazil Nuts


  • Heat cast-iron skillet on medium, adding 1 tbsp. of coconut oil in a cast-iron skillet.

  • Lightly sauté shallot for 3-4 minutes, then remove from pan.

  • Heat pan until very hot, then add ½ tbsp. more of coconut oil.

  • Sear salmon fillet on both sides for 2-3 minutes, until the underside is lightly browned, ending with skin side down.

  • Plate salmon, cover in sautéed shallot, and sprinkle with Brazil nuts and cilantro. Add seasoning. Squeeze lemon over. Voila! 🙂


  1. Fish and Omega-3 Fatty Acids. How Cigarettes Damage Your Body. http://www.heart.org/HEARTORG/HealthyLiving/HealthyEating/HealthyDietGoals/Fish-and-Omega-3-Fatty-Acids_UCM_303248_Article.jsp#.W1c9fthKg_U. Accessed July 24, 2018.
  2. Menon S. Mercury Guide. NRDC. https://www.nrdc.org/stories/mercury-guide. Published January 9, 2018. Accessed July 24, 2018.
  3. What You Need to Know about Mercury in Fish and Shellfish. WebMD. https://www.webmd.com/diet/mercury-in-fish#1. Accessed July 24, 2018.
  4. Fish and Omega-3 Fatty Acids. How Cigarettes Damage Your Body. http://www.heart.org/HEARTORG/HealthyLiving/HealthyEating/HealthyDietGoals/Fish-and-Omega-3-Fatty-Acids_UCM_303248_Article.jsp#.W1c9fthKg_U. Accessed July 24, 2018.
  5. Kohlstadt I. Fish, mercury, and personalized medicine. Townsend Letter: The Examiner of Alternative Medicine. June 2007.
  6. How Does Mercury Get Into Fish? Scientific American. https://www.scientificamerican.com/article/how-does-mercury-get-into/. Accessed July 24, 2018.
  7. El-Moselhy KM, Othman A, El-Azem HA, El-Metwally M. Bioaccumulation of heavy metals in some tissues of fish in the Red Sea, Egypt. Egyptian Journal of Basic and Applied Sciences. 2014;1(2):97-105. doi:10.1016/j.ejbas.2014.06.001.
  8. The Health Benefits of Cilantro. Dr. Group’s Healthy Living Articles. https://www.globalhealingcenter.com/natural-health/health-benefits-of-cilantro/. Published February 16, 2017. Accessed July 24, 2018.
  9. Negi, R., Satpathy, G., Tyagi, Y. K., & Gupta, R. K. (2012). Biosorption of heavy metals by utilising onion and garlic wastes. International Journal of Environment and Pollution, 49(3/4), 179. doi:10.1504/ijep.2012.050898.
  10. Stockler-Pinto, M., Mafra, D., Farage, N., Boaventura, G., & Cozzolino, S. (2010). Effect of Brazil nut supplementation on the blood levels of selenium and glutathione peroxidase in hemodialysis patients. Nutrition, 26(11-12), 1065-1069. doi:10.1016/j.nut.2009.08.006
  11. Ralston, N. V., & Raymond, L. J. (2010). Dietary selenium’s protective effects against methylmercury toxicity. Toxicology, 278(1), 112-123. doi:10.1016/j.tox.2010.06.004.


  1. oprol evorter

    I have been reading out some of your stories and i can claim nice stuff. I will definitely bookmark your website.

  2. Michele Wilks

    Very clear and helpful information. The recipe is a nice touch, making it tonight, thanks.

  3. Vida

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