have concluded that if certain substances cause cancer in mice then they might cause cancer in human beings as well.
             Scientists are also risk factors and some have even developed cancer from their own equipment. Early radiologists that worked with X-ray machines developed cancer from frequently being exposed to radiation, even though the amounts were small it built up over time and cancer developed. Today dentists leave the room while the x-ray is being taken, and the patients wear a lead apron so they are not affected by the radiation.
             A patient needs to look for warning signs and early detection of cancer increases the chances of a cure. Many cancers are more easily treated if they are found before they spread and become larger. Therefore The American Cancer Society advises people to look for these signs to protect yourself: a change in bowl or bladder habits, a sore that doesn't heal, unusual discharge, thickening or lump in the breast or elsewhere. Also, indigestion or difficulty swallowing, obvious change in wart or mole, or a nagging hoarseness can be signs. If these symptoms persist for more than two weeks, a doctor should be consulted. Age is also a factor for some and usually all women over fifty are at risk, and women over forty if with a family hi
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