cancer growth by suppressing inflammatory pathways, sort of blocking a tumor's ability to expand. michael georgeson has been taking it for years to help prevent heart attacks and strokes. but recent studies show aspirin might also prevent his risk of other types of cancer. >> all the more reason to take it. >> reporter: still, taking an aspirin every day isn't for everyone. just one a day even with food can cause fatal bleeding. so while researchers continue looking at the benefits of aspirin, doctors say this summer, the best bet under the sun is still sunscreen. sharyn alfonsi, abc news, new york. >> still lather up, folks. just lather up. >> so important. coming up, an explanation from mary j. blige regarding some financial issues. we knew she had something to say about that. >> she does. and the hot singer who is putting a lot more skin into "the skinny." we'll be right back. >> announcer: abc's "world news now" will continue after this from our abc stations.