The Joe Rogan ExperienceJoe Rogan Experience #1154 - Doug Duren & Bryan Richards
CHAPTERS
- 0:02 – 3:21
CWD arrives on Doug’s Wisconsin farm and why it worries hunters
Joe introduces Doug Duren and wildlife biologist Bryan Richards, framing the episode around chronic wasting disease (CWD) and its arrival on Doug’s property in Wisconsin. They set up the controversy around downplaying CWD and why the topic matters beyond ordinary deer mortality.
- 3:21 – 4:20
What CWD does to deer: a fatal prion brain disease
Bryan defines CWD as a transmissible spongiform encephalopathy (TSE) that causes progressive neurological damage and death. They clarify that there is no cure and relate it to other TSEs familiar to the public.
- 4:20 – 5:36
Prions ("preons"): what they are and why they persist
The conversation drills into what prions are (misfolded proteins) and why they’re uniquely hard to neutralize. Bryan explains how normal prion proteins differ from disease-associated forms, including extreme resistance and long environmental persistence.
- 5:36 – 10:53
How TSEs spread in people and livestock: kuru and mad cow lessons
Using kuru in Papua New Guinea and BSE (mad cow disease), Bryan explains how feeding infected nervous tissue drives transmission. These examples illustrate long incubation periods and how breaking the transmission cycle can end outbreaks—unlike CWD.
- 10:53 – 13:11
CWD’s stealth phase: incubation, shedding, and “Typhoid Mary” deer
They explain why CWD is so difficult to control: infected deer can look healthy for a long time while shedding infectious material. Doug’s experience testing apparently healthy bucks underscores how infection can be invisible in the field.
- 13:11 – 14:42
From localized to global: spread across states and into Norway
Bryan traces CWD’s expansion from a small western U.S. focus to widespread presence across North America and beyond. He details detections in many U.S. states, Canada, South Korea (via imported captive elk), and Scandinavia.
- 14:42 – 19:41
Norway’s hard-line response: stamping out an entire reindeer herd unit
Norway’s approach is presented as a rare example of aggressive early intervention: eliminating an entire herd unit and keeping the area fallow. They discuss why early detection and fast action are critical given environmental contamination.
- 19:41 – 21:43
Human health risk and the species barrier—plus the problem of CWD strains
They address whether CWD can infect humans, emphasizing that epidemiology hasn’t shown crossover but science can’t rule it out. The discussion deepens into “species barrier” mechanics and why evolving strains could change the risk profile.
- 21:43 – 36:23
Why dismissing CWD is misleading: comparing it to EHD and winter kill
Responding to claims that other factors kill more deer, Bryan contrasts CWD with EHD (a midge-borne disease) and seasonal mortality. The key distinction is that CWD’s transmission cycle has no known natural “off switch” and prevalence can climb indefinitely.
- 36:23 – 54:17
Environmental contamination and agriculture: plants, hay bales, and exposure vs infection
Bryan explains how prions can bind to surfaces, be taken up by plants, and potentially move via agricultural practices. They stress the difference between widespread exposure and proven transmission to humans or livestock, while noting exposure is increasing.
- 54:17 – 1:17:20
What can be done now: disposal, carcass movement, regulations, and deer farms
Doug and Bryan shift to actionable steps: slowing spread, improving disposal infrastructure, and reducing human-assisted movement. They discuss clay-lined landfill disposal, testing kiosks, and how captive cervid facilities and carcass dumping can move CWD long distances.
- 1:17:20 – 2:17:02
Long-term tools and tradeoffs: vaccines, genetic resistance, predators, and hunting policy battles
They explore future possibilities (vaccines, genetic resistance) and why partial solutions can have unintended consequences. The episode closes on contentious management choices—buck-focused harvest, baiting/feeding bans, Earn-A-Buck politics—and the need for education and political will.
