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Summary
On episode 238 of 40+ Fitness, Coach Allan sits down with Dr. Richard Pitcairn and Susan Pitcairn, authors of Dr. Pitcairn's Complete Guide to Natural Health for Dogs and Cats, a book now in its fourth edition since it was first published in 1981.
Richard and Susan argue that the same nutrition principles that help people live longer also apply to dogs and cats, and that a whole-food, largely plant-based diet can reduce the toxin load pets carry from eating animal fat.
The conversation covers bioaccumulation up the food chain, what a safe transition to a plant-based pet diet actually requires, natural flea control, and why annual vaccination may be doing more harm than good.
Links
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Key Takeaways
- Toxins concentrate as you move up the food chain. Through bioaccumulation, chemicals absorbed by plants and small animals get concentrated thousands of times over as larger animals eat smaller ones. Richard notes a trout can concentrate certain chemicals 10,000 times relative to the water it swims in.
- Between 85 and 98 percent of environmental toxins people and pets consume come from animal fat. Because humans, dogs, and cats sit near the top of the food chain, they carry the highest concentrations of these chemicals, which Richard believes explains a rise in vague, hard-to-diagnose chronic conditions in pets.
- A vegan diet for cats requires supplementation, not just careful cooking. Susan is clear that cats need a veggie-specific supplement to get nutrients like taurine and B12 that plant foods cannot supply on their own. Dogs can often thrive on high amounts of legumes like lentils and tofu with a similar supplement covering B12 and key amino acids.
- Dogs have adapted to digest starches far better than wolves. Genome studies show dogs carry roughly 28 times more copies of the gene for amylase, the enzyme that digests starch, than wolves do, a legacy of thousands of years living alongside farming humans.
- Chemical flea treatments are poisons with unknown effects beyond the flea. Richard recounts a manufacturer telling him decades ago that a topical flea product was never tested for its effect on a child who hugs a treated dog, only on the flea and the dog.
- Fleas are nesting parasites, so sanitation beats chemicals. About 90 percent of a flea population develops off the animal in bedding and resting areas. Vacuuming, mopping with hot water, and using flea traps target the larvae directly without exposing pets to toxic sprays.
- Annual vaccination is not scientifically supported for most core vaccines. Richard explains that a healthy adult animal given a virus vaccine like distemper or parvovirus typically develops lifelong immunity, and that yearly boosters were adopted by the veterinary profession without research behind them, sometimes causing allergies or immune confusion.
- Rabies vaccination frequency is a legal requirement, not a medical one. Most states require boosters roughly every three years, but Richard notes this schedule was set to protect people, not because evidence shows immunity wears off on that timeline.
“Just the money you're going to save on these extra vaccinations that your dog doesn't need is going to more than pay for the book.”
Dr. Richard Pitcairn