To dream that you have this disease does not have to be a prediction (although if you have symptoms of discomfort, it is worth a check). Cancer is a tumor, and the dream could mean that an undesired element is becoming part of yourself or is growing in excess; for example a growing obsession that can affect your personality, and even your health. Having cancer in dreams also indicates that you do not properly deal with your emotions which end up being destructive; the dream is a warning against that.
Dreams reflect our actions that we have already performed. Most of us have dreams activities relating to our past life. One of the common dreams that every individual has gone through is their experiences during the school life, where you would get images of teacher hitting you, making you feel numb and shameful.
The amount of sleep that a person gets will be associated with his or her lifespan. However, the causes or effects are still vague, as illnesses can also affect a person's sleeping pattern. According to a 2010 study, women under the age of 50 to 79 only get less than five hours of sleep every night, which makes them a subject for death occurrences.