prostate cancer treatment, robotic surgery, robotic prostatectomy,, Dr. Samadi

January 15, 2011 11:07 ET

Prostate Cancer Treatment Expert Dr. David Samadi Addresses Study That Finds Exercise Beneficial Against Prostate Cancer Death Rate

NEW YORK, NY--(Marketwire - January 15, 2011) - According to a study published in the January 4th online issue of the Journal of Clinical Oncology, prostate cancer patients who routinely exercise apparently lower their risk of dying from the disease. Vigorous activity can improve the prognosis among prostate cancer patients, but even moderate physical activity seemed to reduce the overall risk as well. "The study is encouraging but it cannot pinpoint accurately exactly why and how exercise affects the morbidity rate of prostate cancer patients," said Dr. David B. Samadi, a robotic prostatectomy and robotic surgery expert, as well as the Vice Chairman, Department of Urology, and Chief of Robotics and Minimally Invasive Surgery at The Mount Sinai Medical Center.

"It could be that exercise is related to decreased likelihood of inflammation or maybe it has some sort of impact on the immune system," said Dr. Samadi, "But I have always advocated exercise and physical activity to combat the effects of obesity, which is the cause of many health-related problems alone." Samadi advises at least three hours or more of exercise per week to his patients, regardless of their risk factors. "But if the bonus is a major risk reduction in prostate cancer mortality, then all the better," he said.

"This is not to say that physical activity is the cure for prostate cancer," said Dr. Samadi, "But it's definitely positive research, especially when you look at other studies that link exercise to improved outcomes for other cancers." As always, more research is required to ascertain the exact link of exercise on cancer patients.

Researchers found that seven or more hours per week of the most popular activity, walking, provided a significant benefit, equivalent to walking less than 20 minutes per week. Those who walked at a normal pace fared better than those who walked at an easy pace. Those who walked at a brisk or fast pace saw the largest drop in their risk for death. Vigorous activities included biking, tennis, jogging or swimming for three or more hours a week.

"Physical activity increases insulin sensitivity and may affect insulin growth which influences the formation of new blood vessels that lead to cancer progression," said Dr. Samadi. "Exercise also lowers inflammation and boosts immunity though how these molecular actions interact to affect prostate cancer outcomes requires studying."

Prostate cancer is the most common cancer among American men. However, more than 80 percent of patients have localized disease, and the 10-year survival rate post-diagnosis is about 93 percent. "The good news is that a growing number of men are cancer survivors," said Dr. Samadi, a prostate cancer treatment expert with over 3,100 successful cases to his credit.

Dr. Samadi says the study could be groundbreaking, but has always acknowledged that people who exercise are in better cardiovascular and overall health "so it stands to reason that people who exercise have improved overall survival," he said.

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