March 21, 2012
By Durado Brooks, MD
How often do you think a family conversation about cancer occurs? The truth is, not nearly often enough.
Colorectal cancer (often called simply "colon cancer") is cancer that develops in the colon or the rectum, and it's the third most common cancer in the U.S. While most people diagnosed with colon cancer do not have a family history the disease, people who have this cancer in their family have a significantly higher chance of being diagnosed. The good news is that colon cancer is one of the most preventable cancers, and this prevention can work even for people who are at high risk of the disease. More...
March 14, 2012
By Debbie Saslow, PhD
When it comes to screening for cancer, a common belief held by doctors as well as patients is "more is better." It seems only logical that more frequent screening with the newest technologies translates to more cancers detected at the earliest possible time and, ultimately, more lives saved.
Cervical cancer is an example of why this is not necessarily so. Dating back to the late 1940s, the Pap test has been detecting not only early cervical cancers, but changes in the cervix ("pre-cancers") that when treated or removed lead to actual prevention of cancer in addition to early detection. For decades, the majority of women in this country have scheduled their doctor appointments around their "annual Pap." As a result of widespread Pap testing, mortality rates dropped by 70% and the Pap test became the biggest success story for cancer screening in history.
In the late 1980s, it was discovered that cervical cancer is caused by HPV, the human papilloma virus. Studies of the natural history of HPV and cervical cancer showed that it takes, on average, 10-20 years from the time a woman is first infected with HPV until the time a cervical cancer might appear.
In 1987, the American Cancer Society, and several other national organizations, recommended that most women could safely be screened for cervical cancer with the Pap test every 3 years rather than every year. Twenty-five years later, studies show that the majority of health care providers still recommend annual screenings and that the majority of women expect annual screenings. More...
March 04, 2012
By William C. Phelps, PhD
How did you feel the last time someone sneezed in the elevator? Whether it is the common cold or the seasonal flu, we know some illnesses are caused by infections with viruses or bacteria. But what if cancer could be caused by an infection?
Some cancers caused by viruses and bacteria
Although it is not widely realized, 15%-20% of cancers around the world are caused by infectious agents - viruses or bacteria. Fortunately for all of us, the infectious agents linked to cancer are not easily spread from person to person like the common cold virus. It turns out, even when many of these viruses and bacteria infect people, only a small subset will go on to develop cancer. In most cases, we still do not understand why certain people develop cancer and others do not - even though they were also infected. More...