It's March. And that means it's the national month for Brain Injury Awareness, Endometriosis Awareness, Nutrition Awareness, Eye Health and Safety Awareness, Multiple Sclerosis Awareness, Sleep Awareness, Problem Gambling Awareness and my favorite, for the purposes of The Cancer Blog -- Colorectal Cancer Awareness.

Colorectal cancer -- cancer of the colon or rectum -- is a disease that affects both men and women and is preventable nearly 90 percent of the time.

Starting at age 50, men at women at average risk for the disease should get screened. Those with increased risk, like African-Americans who typically develop colorectal cancer at younger ages, should be screened even earlier.

Screening -- by way of fecal occult blood test (FOBT), flexible sigmoidoscopy, and colonoscopy -- is critical because colorectal cancer often occurs with no symptoms. Symptoms do sometimes present themselves in the later stages of the disease and include rectal bleeding, bright red blood in or on the stool, change in bowel habits, stools that are narrower than usual, general stomach discomfort, diarrhea, constipation, frequent gas pains, unexplained weight loss, constant fatigue, and vomiting. Persistence of any of these symptoms for more than two weeks warrant an immediate visit with a health professional.

Treatment for this disease, which strikes about 153,000 people and causes about 52,000 deaths each year, includes surgery, radiation, and chemotherapy.

In the spirit of this National Colorectal Awareness Month, experts recommend remembering these important points:

• Colorectal cancer can be prevented.
• Screening for the disease can identify polyps -- grape-sized growths in the colon and/or rectum -- that can be removed to prevent cancer from developing.
• The magic age for screening is 50 -- unless you have an increased risk for the disease.
• Colorectal cancer is treatable.
• Regardless of your age, know the risk factors, know the symptoms, and know your family history.
• Talk with your health professional about colorectal cancer and your own risk for the disease.

Screenings for colorectal cancer offer more than a chance for early treatment -- they offer the chance to avoid cancer completely. The disease usually starts with growths called polyps that can take a decade to turn cancerous. If polyps are found and removed, cancer can be avoided altogether. Yet many are avoiding the screening. And polyps that go undetected can turn to a cancer that can lurk silently in anyone -- especially during middle age and beyond. And black Americans are especially at risk.

Almost 42 million Americans over the age of 50 are not getting checked for colorectal cancer -- the nation's No. 2 cancer killer. Perhaps it's the financial burden that comes with the life-saving procedure. Now in five states, a government-funded program is offering free testing for the poor. But still, many will fall through the cracks in many states. And while Medicare pays for screenings, this federal program is for people 65 and older -- a long wait for someone at age 50 who needs the test but does not have insurance.

Perhaps it's the part of the body under study that steers people away. Perhaps it's the manner in which the test is performed -- a long, flexible tube is used to visually inspect the colon -- that turns heads in the wrong direction. While the financial burden is a valid deterrent, other worries or fears should be put to rest. The test is not all that bad, says one doctor who had a colonoscopy himself. The worst part of the whole experience may be the liquid mixture that is consumed prior to the test that cleans out the system -- minor discomfort really in the scope of the alternative. Cancer.

Colonocopies are recommended just once every 10 years. And nearly 60 percent of deaths from colorectal cancer can be prevented if each person over the age of 50 finds some way to make this screening happen. And if not this screening, there are other options -- like a fecal test that is done annually but is more more affordable and can be quite effective too. So consider your options. And make a choice.