Dr Anthony Chaffee challenges the widely held belief that plants are inherently healthy, instead asserting that plants are designed to defend themselves using chemical toxins. He states that plants are living organisms with sophisticated chemical deterrents, having catalogued nearly one million such defense chemicals that can be directly toxic, disrupt human physiology and hormones, or impair digestion and nutrient absorption. Chaffee likens plants’ defensive nature to animals like a bison or moose, which will protect themselves if threatened, noting that the majority of plants on Earth can kill humans even in small quantities, and some can cause death through inhaled fumes. He explains that plants are quite sentient, with an entire body acting like a central nervous system, and can communicate threats and upregulate toxins when attacked, which is why folk wisdom advises against eating produce with insect blemishes.
The conversation highlights that humans have been apex predators, primarily consuming meat for over two million years, a period significantly longer than the mere 10,000 years since the advent of agriculture. This recent shift to plant-based diets is evidenced by the relatively recent appearance of the amylase enzyme in the human genome, which helps break down plant starches. Dr Chaffee argues that meat provides all necessary nutrients, unlike plant-based diets which often require supplementation and are considered deficient. Furthermore, domesticated pets fed human-made, grain- and plant-based kibble suffer from similar chronic diseases as humans, whereas wild carnivores naturally maintain ketosis and do not consume carbohydrates. Dr Chaffee himself observed significant improvements in his athleticism, returning to play professional rugby at 38 after adopting a meat-heavy diet, feeling “a thousand times better” and performing “like I was 22 again”.
According to Dr Chaffee, chronic diseases constitute the major burden of illness globally, accounting for 90% of deaths in the Western world and 74% worldwide. He firmly asserts that these diseases are almost exclusively caused by consuming a species-inappropriate, post-agricultural diet. Historically, pre-agricultural, hunter-gatherer populations primarily dealt with injuries and infectious diseases, living as long as or longer than modern Westerners, but without chronic conditions. However, upon transitioning to a post-agricultural, Western diet, these populations experienced a dramatic increase in chronic diseases, which often resolve when individuals return to a diet aligned with human biological design, such as a meat-based approach. This dietary shift has been shown to alleviate or reverse conditions like diabetes, autoimmunity, hypertension, and even improve Alzheimer’s.
A significant point of contention for Dr Chaffee is the “con” and “fraud” surrounding the vilification of saturated fat and cholesterol, which he attributes to pervasive marketing and propaganda initiated by sugar and processed food manufacturers. He references internal memos from sugar companies, published in the Journal of the American Medical Association in 2016, which detailed payments to Harvard professors to falsify data. Crucially, Dr Chaffee notes that the US dietary guidelines were revised in 2015, removing recommendations to limit dietary saturated fat and cholesterol due to a lack of evidence linking them to serum cholesterol levels or cardiovascular disease. He cites a 2020 Journal of the American College of Cardiology umbrella review that found no relationship between saturated fat intake and cardiovascular disease, and, in fact, an inverse relationship with strokes.
Dr Chaffee highlights the profound influence of food and drug companies on medical education, scientific journals, and dietary guidelines, driven by a profit model that favours continuous treatment over disease cures. He notes that medical curricula often omit extensive literature supporting dietary interventions because there are no commercial products to market alongside them. This industry influence extends to funding nutritionist bodies that promote plant-based diets, which in turn benefits processed food companies. He argues that these entities are heavily invested in each other, creating a cycle where food companies contribute to illness, and drug companies profit from treating the resulting chronic diseases, often pushing expensive, patented drugs and advocating for unphysiologically low targets for cholesterol and blood pressure to expand their market.