In an analysis published in JAMA Oncology the use of low-dose aspirin

Association of Analgesic Use With Risk of Ovarian Cancer in the Nurses’ Health Studies
Association of Analgesic Use With Risk of Ovarian Cancer in the Nurses’ Health Studies

In an analysis published in JAMA Oncology, the use of low-dose aspirin was associated with a reduced risk of epithelial ovarian cancer.

On the other hand, the use of nonaspirin nonsteroidal anti-inflammatory drugs (NSAIDs) seems to be associated with an increased risk.

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https://jamanetwork.com/journals/jamaoncology/article-abstract/2704211