Plant Toxins Are Real—And They Can Harm Human Health.

"Plants out of necessity contain defense chemicals. And those defense chemicals can be harmful for humans."
~Paul Saladino, MD

Paul Saladino’s point is simple: plants evolved defensive compounds—like lectins, phytates, cyanogenic glycosides, and oxalates—to repel predators. These compounds aren’t nutrients for us; they’re biological weapons. In fact, cyanogenic glycosides in cassava or bamboo can release cyanide and have caused serious health issues worldwide. Lectins found in raw beans can irritate gut lining and potentially trigger inflammation unless properly cooked.

Research confirms many plant “anti-nutrients” bind minerals, block enzymes, and may harm vulnerable individuals. For example, phytates reduce iron, zinc, and calcium absorption. One Harvard study even found higher glucosinolate intake—found in broccoli and Brussels sprouts—was linked to a 19 % increase in type 2 diabetes risk.

To avoid plant defense chemicals, choose an animal-based diet focused on nutrient-dense foods like meat, eggs, and organs.