From leech socks to mosquito netting, here's what to pack for a trip into the Amazon rainforest. | National Geographic Science

🏆 Leech Therapy (Hirudotherapy) Leech therapy, or hirudotherapy, is an ancient healing practice that continues to be used around the world today. During treatment, medicinal leeches attach to the skin and release natural compounds—such as fibrinolytic enzymes and collagenase—found in their saliva. These enzymes help improve circulation, reduce inflammation, and support tissue healing. Many patients report feeling revitalized after therapy, thanks to both the reduction of pain and the natural de