Our bodies are good at telling us when something is wrong most of the time. It is important to listen to those messages and seek medical attention when specific symptoms arise. The June issue of the Mayo Health Letter covers symptoms that should not be ignored.

Seven symptoms not to ignore:

• Unexplained weight loss: This could be a symptom of such conditions as an overactive thyroid, depression, liver disease, cancer or other noncancerous disorders that interfere with how well your body absorbs nutrients.
• Fever: A fever can point to underlying infections. A fever accompanied by chills or one that is greater than 103 degrees should be evaluated immediately.
• Shortness of breath: Gasping for air or wheezing are medical emergencies. Shortness of breath can be caused by asthma, heart problems, anxiety, panic attacks, or a blood clot in the lungs.
• Severe headaches: A headache accompanied by a fever, stiff neck, rash, mental confusion, seizure, vision changes, weakness, numbness, speaking difficulties, scalp tenderness or pain when chewing are medical emergencies. Causes vary for headaches and may include stroke, blood vessel inflammation, meningitis, brain tumor, aneurysm or bleeding on the brain. Most headaches, are just that, headaches but it is important to know the warning signs for more serious underlying conditions.

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.