This week's artwork was donated by a pediatric cancer patient who received treatment at The Children's Hospital of Philadelphia .
Several studies indicate that low dose aspirin decreases the risk of strokes due to blood clots.
A number of studies, some of them by the American Cancer Society, suggest that aspirin may also prevent or inhibit certain cancers. This issue of Research News describes why the Society became interested in studying aspirin and discusses the accumulating evidence that aspirin may prevent or inhibit several digestive tract cancers. Besides hinting at dramatic disease prevention possibilities, aspirin illustrates how laboratory research, epidemiologic insights, and randomized clinical trials all contribute to solving disease riddles. The Society's major contribution to the current knowledge about aspirin has been through its epidemiologic studies. CPS-II is a compilation of lifestyle data from 1,185,124 Americans.