My definition of health is the harmony of the body and mind, clear of disease or physical deformity. This could be being physically active, and stimulating the mind with some brain teasing puzzles or games. Illness is the perception of the mind that something is wrong, causing the person to feel a symptom that is not really there. My definitions of these words have come from things I learned in school, and from my own observations of others. Also, I am able to draw from my own personal experiences, especially with the illness part because if I did not want to do something and if I thought about it hard enough I could cause my own symptoms.
I do not believe that “Infertility” is an illness. Some people and animals are born infertile and there is nothing they can do about it. It is a part of them just like any emotion we may feel. There is no escaping it and it is accepted into their everyday lives. I do not believe that “Poverty” is considered an illness as well. Poverty is an economic status felt by those in low class and should not be confused with a state of mind that people choose to live in. Nobody wants to live in poverty, but some are forced due to the choices they made at an earlier point in their lives. It is reversible, but it is not treatable like an illness. I do not consider “Sadness” to be an illness as well. Sadness is an emotion that everyone feels, but it is in no way an illness. Depression, which is a much more severe version of sadness, is an illness, but depression is not felt by everyone. If someone is exposed to sadness on a regular basis, it may upgrade to depression, but sadness itself is not an illness to me.