A Fish Story: How To Improve Your Health While Protecting The Oceans

Episode 93 1h 25m


Fish is one of the most nutritious food sources on the planet, especially when it comes to protein. But I’m usually scared to eat it.

That’s because some seafood is at risk for toxicity that can harm our health, not to mention certain aquaculture methods are contributing to declining populations and even the acidification of our oceans. It’s not all bad, but it is complex.

There are several important things we should think about in order to reap the health benefits from fish and act as environmental stewards at the same time.

To better understand seafood I sat down to talk with Paul Greenberg for this week’s episode of The Doctor’s Farmacy.

Paul shares his expertise on fishing and aquaculture and breaks down the most important aspects to think about for health and environmental safety. To keep our oceans vital we need to support the entire food chain—the little fish are the ones that can pass nutrients from plankton onto the big fish we want to eat. Without balance, every part of the chain suffers.

And there are many reasons fish populations are in danger. Monoculture is leading to dead zones; coastal fish farms leak nitrogen, antibiotics, and other toxins into the oceans; zooplankton that feeds the smallest fish in the food chain is suffering the most from increased carbon levels.

But this doesn’t mean we can’t still enjoy fish responsibly. Paul and I talk about the best resources for eating clean seafood and why certain things, like farmed salmon, are less nutritious than wild-caught.

I hope you’ll tune in to learn more about enjoying fish more consciously.

You can watch Paul’s TED talk right here.


This episode is brought to you by and Butcher Box. The Doctor’s Farmacy podcast works with a select group of sponsors to allow for ongoing production and allow it to be zero-cost to anyone who wishes to listen to and watch the podcast.

Topics Covered

  • Why I’m scared to eat fish and why Paul is optimistic about our oceans

    (4:03 - 6:55)

  • Overfishing and the declining fish population around the world

    (15:05 - 17:57)

  • How our monoculture is leading to the creation of dead zones in our waters

    (22:56 - 25:48)

  • Pros and cons of aquaculture

    (24:34 - 27:26)

  • The nutritional value and toxin levels of farmed salmon

    (28:45 - 31:37)

  • The decline of our oceans from an environmental point of view and the death of phytoplankton

    (35:44 - 38:36)

  • The most effective way to test for mercury exposure

    (41:18 - 44:10)

  • The best types of fish for you to eat

    (50:21 - 53:13)

  • Fish oil, omega-3 deficiency, and veganism

    (57:55 - 1:00:47)

  • The issue of microplastics in the ocean

    (1:12:52 - 1:15:44)

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Ep. 93 - A Fish Story: How To Improve Your Health While Protecting The Oceans