The exact cause of cancer is still not discovered. Even with smoking, some people suffer from lung cancer while others do not. Yet, there are some specific factors which can increase the chance of having cancer. They include age, lifestyle, family history of cancer, diet, race or some medications. Age issue is the most significant. The average age which can be easily affected is 70. Cases of cancer under the age of 50 are rare and under the age of 45 almost hardly happen.
With that said, it is not uncommon for men to die without ever knowing that they have cancer. In a 2005 analysis of autopsies conducted in six countries world wide (Sweden, China, Germany, Uganda, Israel and Jamaica) in 2005, it was found that in men who died of causes other than prostate cancer, fully 80% of men aged 70 or older were shown to have cancer of the prostate, 30% for men in their fifties.
In the area of diet; animal fat and high blood levels of trans fat acids from hydrogenated vegetable oils are suspected contributors, as is a low level of Vitamin E, which indicates a low intake of green vegetables, and vitamin D, which indicates too little time in the sun.
There is some evidence that regular intake anti-inflammatories (ASA, Naproxen, Ibuprofen) decreases the risk of contracting prostate cancer, as may statins, which are drugs used to lower cholesterol levels. Obesity and/or high levels of testosterone increase the risk of cancer. High levels of herbicide exposure are a suspected accelerant.
Rates for prostate cancer vary greatly, country-by-country. It was previously thought that this was due to lifestyle and diet variations between cultures – rates are lowest in Asia, her in Europe and highest in North America. However, the previously mentioned study that indicates many men have the disease and die without knowing it requires follow-up study to determine to what extent the lower Asian rates are due to lower incidence of detection rather than absence.