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Tuna and Mercury How It Compares to Amalgam

tuna mercury dental amalgam
Published By Dr. Rachel Hall at 9 September, 2011

Tuna, Mercury and Amalgam Dental Fillings

Lets look at tuna and mercury content compared to amalgam fillings.

Many dentists will tell you that eating tuna puts you at a great risk of mercury exposure than you dental amalgams. Is this correct?



Some quick facts for you about mercury and tuna:

  • The Environmental Protection Agency (EPA) state that daily exposure to mercury should not exceed 0.1micrograms/kilogram of body weight/day
  • This averages around 7ug per day
  • A medium portion of salmon approx 200g contains 0.01ug of mercury
  • The mercury content of tuna ranges from 0.06 – 0.3ug
  • A person with 4 small amalgam fillings is exposed daily to an average of 7ug or more of mercury
  • Therefore 1 small amalgam contains around 1.75ug of mercury – much more than your average can of tuna
  • A person with 8 amalgam fillings daily exposure averages 12.5ug with 16% in this category showing levels of exposure up to 35 ug/day
  • The average person with amalgams is exposed to an average of 10 ugs or more per day which exceeds the EPA standards
  • 10 ug per day equates to a huge amount of salmon which has negligible mercury content!!!!
  • However, if a person weighing approx 55kg consumes 3x200g of tuna per week they would be considered slightly over their recommended intake for mercury per day.
  • So the bigger you are the more tuna you can eat!!! (In theory)

If you are concerned about your mercury levels or amalgam fillings then seek a consultation with a holistic dentist or integrative medicine doctor.


  • Dr. Rachel Hall

    Dr. Rachel Hall

    Rachel is the founder and principal dentist at Evolve Dental Healing with over 25 years experience, practicing holistically since 2001. Not your typical dentist, Rachel is a passionate opinion leader, challenging convention to empower people to make better dental and health choices, helping thousands to have healthy natural smiles. A respected writer and presenter on holistic dentistry, health and wellness it is Rachel’s mission to revolutionise the way people look at their dental health.

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