Host-parasite relationship

A host-parasite relationship is a close biological interaction where a parasite lives within or on a host organism, benefiting at the host’s expense. The parasite relies on the host for nutrients, shelter, or reproduction, often causing harm, such as illness or weakened health. The host, on the other hand, may suffer from reduced vitality or increased vulnerability to other issues. This relationship can vary from temporary to long-term and is common in nature, spanning animals, plants, and even humans. The balance depends on how well the parasite can exploit the host without killing it too quickly, ensuring its own survival.