The podcast episodes discuss the presence and potential risks associated with heavy metals, such as lead, zinc, and cadmium, in various contexts, including urban soils, food sources, and their impact on human health.

In the episode How safe is the soil in our cities?, the challenges of growing food in urban areas with contaminated soil from past industrial activities are explored, including methods for testing and managing soil contaminants like heavy metals, and providing advice for safe urban gardening and farming practices.

The episode Dr. Stephen Cabral on the Secret to Conquering Chronic Illness EP 431 discusses the impact of heavy metals on health and the importance of identifying and removing them from the body as part of a holistic approach to addressing chronic illnesses.

In the episode Paul Saladino: Optimizing Fertility, Cholesterol Truths, Creatine for Women & Weight Loss, the topic of heavy metals in various foods, including fish, leafy greens, and certain plant-based sources, is explored, and the potential health implications of heavy metal exposure are explained.