Healthy Fish Choices

Q & A

I am often asked about the safety of fish and seafood as I personally consume fish twice a week as a nutrient dense option.

Here are some points to consider when shopping:

  1. Aim for small fish and seafood which generally contain less mercury than larger fish such as tuna and swordfish.
  2. Ask about origin of country where the fish is coming from. Did you know that approximately 90% of seafood is imported from Vietnam, China and Thailand. Unfortunately these countries lack quality control and enforcement of farming testing (i.e. overfishing, growth hormones, antibiotics and chemicals in the fish feed).
  3. Check for local fishery and resources such as Monterey Bay Aquarium Seafood and

General Mercury Levels of Common Fish

See the list below for general mercury levels of common types of fish and how often to safely consume each type [1].

healthy fish choices, mercury levels in fish


[1] General Mercury Levels of Common Fish chart:
“Smart Seafood Buying Guide”, Retrieved 6 Nov 2022. <>

Marsha Fenwick, C.N.P.  R.R.T.

Marsha is not your typical nutritionist. She began her career 20 years ago as a Registered Respiratory Therapist. Later, she earned her certifications as a Registered Nutritional Consultant Practitioner, Certified Nutritional Practitioner, and Registered Orthomolecular Health Practitioner. Marsha is also a Certified Cancer Coach. Her clinical practice specializes in: sustainable healthy weight loss, digestive health, women's hormones, diabetes, heart health, and cancer prevention and recovery. For more information and to book a FREE 15 minute consultation go to

marsha fenwick nutrition