Parasitic worms reside, and feed on their living hosts. Able to trick the hosts' immune system, the parasite(s) receives protection, and nourishment while stealing essential nutrients from their hosts. The helminth also excretes/secretes various molecules into their generous hosts which can cause a plethora of diseases and health issues: cancers, inflammation, severe weight loss/gain, tiredness, weakness, hair loss, schizophrenia, tics, mood swings and depressions, homosexuality, etc.

Helminths are classified in 3 categories:

~Tremadotes which consists of over 18,000 species, with the most common being: Flukes
~Cestodes consists of over 6000 species, most common: Tapeworms
~Nematodes consists of over 30,000 species, most famous: Pinworms, Ascaris...

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