Our body is nature, therefore it is only logical that nature heals nature. Cures and healing found in nature take time because it fights to remove the disease entirely by adapting the body, making it stronger as it fights the pathogens, as it recognizes the threats. It requires, patience and giving the body all the nutrients, tools and strength to heal. It requires giving it mental, emotional, physical and spiritual health. When the healing is done, it is complete.
A part of you is not missing as is, after a medical operation or an emergency procedure. Something is not left damaged or half repaired. Surround yourself with nature much as possible and let the body calibrate with it. I spend time regularly walking barefoot on grass, lying on it and staying close to the earth, it's called grounding. It helps to balance the energy within you and your surroundings.