High risk of cancer for nonsmokers, study says
6/20/2006 St. Petersburg, FL V. Upender Rao St. Petersburg Times (www.sptimes.com) Researchers at the University of Texas M.D. Anderson Cancer Center found a high risk of developing a variety of cancers among parents, siblings and children of lung cancer patients who never smoked cigarettes. Researchers at the University of Texas M.D. Anderson Cancer Center found a high risk of developing a variety of cancers (melanoma, head and neck, colorectal, prostate, lung and breast) among first-degree relatives (parents, siblings and children) of lung cancer patients who never smoked cigarettes. Olga Gorlova, PhD, an assistant professor in the department of epidemiology, studied 2,465 first-degree relatives of 316 lung cancer patients who were nonsmokers. She compared the results with 2,442 first-degree relatives of 318 controls who were nonsmokers and who did not have cancer. She found the following patterns and magnitude of increased risk among first-degree relatives of nonsmoking lung cancer patients: - Overall risk of cancer was increased by 25 percent. - First-degree relatives developed cancer 10 years earlier than the index case. - Risk of developing a cancer at a younger age among relatives was estimated at 44 percent. - Greater than a sixfold risk especially for lung cancer at a young age. - A 68 percent risk of developing lung cancer at any age. A study of patients with lung cancer, published in the Journal of the American Medical Association, showed an increased risk of lung cancer not only for the first-degree but also for the second- and third-degree relatives [...]