Scientists say regular doses of aspirin may lower the risk of the deadliest type of skin cancer, melanoma in some women. Abc's chief medical editor dr. Richard besser breaks it down for us. Reporter:... See More
Scientists say regular doses of aspirin may lower the risk of the deadliest type of skin cancer, melanoma in some women. Abc's chief medical editor dr. Richard besser breaks it down for us. Reporter: Cheap, common aspirin. Do any of you take aspirin to prevent heart disease in. Yes. What would you say if I told you it might help prevent skin cancer too? Oh, that's better, right? Reporter: Yeah! Reporter: A new study, one of the largest of its kind, looked at 60,000 older caucasian women. They're the most likely to get melanoma, the deadliest form of skin cancer. Those who took aspirin aast twice a week had a 20% lower risk of developing melanoma. Women who took an aspirin for five years or more? The risk was down 30%. Researchers believe aspirin may kill cancer cells, and even new -- stop new ones from forming. Other studies have shown aspirin reducing the risk of stomach cancer, colorectal cancer, and this study suggests that maybe it will work for melanoma, too. Reporter:20% of us, and nearly half of all seniors, take aspirin regularly for heart disease and aches and pains. But it's not without risks. You don't need a prescription to buy asrin, but that doesn't mean it's not a real drug. effects -- stomach ulcers and bleeding -- so don't take aspirin unless your doctor recommends it. But if this research pans out, help against cancer may end up costing just a few bucks a bottle. Dr. Richard besser, abc news, new york.
This transcript has been automatically generated and may not be 100% accurate.