What Can Humans Learn from Nature’s Doctors?

Have you ever wondered if animals have their own form of medicine? In Doctors by Nature, biologist Jaap de Roode reveals that they do—and their methods are surprisingly sophisticated. Many of the plants that animals use for healing have also been adopted by traditional human medicine, and some have even inspired modern pharmaceuticals. De Roode explores how understanding these natural strategies could lead to novel approaches for treating antibiotic-resistant infections and chronic inflammation. The book also stresses the importance of biodiversity and conservation, because losing habitats threatens the delicate bonds between animals and their medicinal resources.

Key Insights from Doctors by Nature

• Self-medication is widespread: It occurs across insects, birds, and mammals, not just primates.
• Animals use both prevention and : They incorporate antimicrobial materials into nests and ingest specific plants when ill.
• Observation fuels discovery: Indigenous knowledge and careful fieldwork have uncovered many of these behaviours.
• Evolutionary medicine: Studying animal self-medication offers clues about the origins of human healing practices.

How Do Ants, Apes, and Other Animals Heal Themselves?

Each chapter of Doctors by Nature delves into a different example of animal self-medication. Chimpanzees in the wild are observed carefully selecting bitter plants known to combat intestinal parasites. Ants gather resin from conifer trees, which has antibacterial and antifungal properties, to shield their colonies from pathogens. Even monarch butterflies lay eggs on toxic milkweed to endow their offspring with a chemical defence against parasites. The book weaves these stories with vivid storytelling and scientific rigour, showing how instinct and learning combine throughout the animal kingdom.

What Is Animal Self-Medication?

Zoopharmacognosy—the study of how animals use plants and other natural substances to treat illness—has intrigued scientists for decades. In Doctors by Nature, biologist Jaap de Roode takes readers on a journey through the wild world of animal self-care, from ants that incorporate antimicrobial resins into their nests to apes that swallow rough leaves to purge parasites. This emerging field challenges our understanding of health and medicine, revealing that many animals have evolved sophisticated ways to prevent and treat diseases without any human intervention.

Why This Book Is a Must-Read

Doctors by Nature has captivated readers with its eye-opening content and accessible prose. Praise highlights the book's ability to change how one sees the natural world—revealing that animals are far more proactive about their health than previously imagined. Whether you are a biologist, a nature enthusiast, or simply curious about the hidden wonders of the wild, this book offers a fresh perspective on the intelligence and resilience of other species. It is a powerful reminder that humans are not the only doctors on this planet.