Peak Human - Unbiased Nutrition Info for Optimum Health, Fitness & Living · Brian Sanders - Filmmaker of Food Lies & Health Coach

Part 224- Boosting Health with Oysters: Conversations on Deep Nutrition with Marine Biologist Stephen Kavanagh

July 31, 2025·57 min·30 clips

Sanders introduces Kavanaugh as a good friend from Ireland and a marine biologist who has done a lot of research on oysters. He says Kavanaugh makes what he sees as the best oysters in the world. Those oysters are turned into a very pure dried supplement. Sanders says they are packed by hand and sold through Nose to Tail. He also says he uses them himself and that they have boosted his testosterone, based on his recent labs. The pitch is real, but the episode keeps circling back to the larger point: nutrient density. Slow food gets set against fast food, with little patience for modern eating on autopilot. The pair talk about how humans relied on oysters, and Sanders floats the idea that they may have helped save humanity as far back as 250,000 years ago. The conversation lingers on the synergy of different nutrients. Co-factors matter, and nutrients do not always work well on their own. Ireland comes up as part of Sanders' broader goal of talking to people studying cultures around the world. Later, the discussion shifts to the practical problem of food access. Kavanaugh pushes back on the idea that farmer's market food is always realistic, but he argues that health is the more expensive problem once sickness shows up. He says people can get away with bad eating in their 30s and 40s, then feel the damage in their 50s and 60s. That long tail matters more than the sticker shock of decent food. He also says his own food spending is not outrageous because he eats less and gets more nutrients per bite. Raw beef and raw fish come up as foods he says his body actually wants. Processed food is described as expensive because you are paying for all the work that went into making it. Sanders echoes the idea with his own habits, saying he is not buying random snacks. The episode closes with gratitude, a promise of a future Ireland tour, and a joke about grass growing down the middle of the road meaning you should probably slow down.

As heard by us

Oysters, slow food, and a blunt case for nutrient density.

Peak Human uses oysters as a doorway into a broader case for nutrient density, slow food, and the way small food choices build on each other. Brian Sanders brings in Stephen Kavanaugh, an Irish marine biologist who studies oysters, and the conversation circles through human…

Read the full review in PlayNext →

Why you'd press play

Oysters, testosterone, and deep-nutrition talk that treats food like it matters.

Read the full recommendation in PlayNext →

Listen to the show on

Apple Podcasts Spotify

Play clips from this episode More from Peak Human - Unbiased Nutrition Info for Optimum Health, Fitness & Living