 [ Symptoms ] i have had a recurring bump on the shaft of my penis for a little over a year its red but doesnt hurt what could it be the bump does not burn sting or hurt in any way it seems to be around where some pubic hair is i have had sexual contact before with my now ex girlfriend and am wondering if it is an std i have given blood not because of the bump but because i wanted to and got my results back they gave me a card that had my blood type and name they gave my a paper for future donations and thats it i have also found sores in my mouth but i have stabbed myself with a toothbrush before and had sores after [ Disease ] the good news for your colon and your rectum is that colorectal cancer is usually preventable the number one way to prevent it is to get screened most men should begin colorectal cancer screening at age 50 if you have colorectal cancer in your family or other risk factors tell your doctor you may need screening at a younger age several screening methods are proven to reduce colorectal cancer rates colonoscopy  you have probably heard of this procedure the downside of it is that a flexible tube about the thickness of a finger is inserted into your anus the plus side is that it can save your life your gastroenterologist gut doctor can usually see and remove polyps or cancer before it spreads if your colon is clean  you probably will not need another colonoscopy for several years flexible sigmoidoscopy  this scaled down version of a colonoscopy is another reasonable option fecal occult blood test  this involves you smearing stool on a paper card and bringing it to your doctor each year your gift is then checked for blood because colorectal cancers often bleed blood in your stool usually earns you a colonoscopy to look for cancer the most recent figures show that the incidence and death rate of colorectal cancer is 35 higher in men than in women also a 2006 study showed that men were more likely to develop polyps and cancer earlier than women therefore early screening may be even more important for men is health some of the other things men can do today to start lowering colorectal cancer risk are eating like a hunter gatherer not a caveman cut back on the red meat like burgers and steaks instead fill up on more than five servings of fruits and vegetables a day these changes alone could reduce your risk by about 50 getting off the couch active men get less colorectal cancer the american cancer society recommends 30 minutes of activity five days a week quitting smoking and limit drinking keep alcohol to one or two drinks a day