Answer :
John, who feels that he has some control over the disease and has taken personal responsibility for his treatment.
What is a disease?
A disease is a specific abnormal condition that adversely affects an organism's overall structure or function and is not immediately brought on by an external injury. Medical conditions with specific signs and symptoms are frequently known as diseases. Both internal and external dysfunctions, such as pathogens, can contribute to the development of a disease. Internal immune system disorders, for instance, have been linked to a wide range of diseases, such as autoimmune disorders, allergies, and various types of immunodeficiency.
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