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Aspirin Use After 70 May Increase Cancer Risk

2/4/2026

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Summary

Story summary

A study published in JAMA Oncology involving nearly 20,000 participants aged 70 and above found no reduction in overall cancer rates and a 15% increase in cancer mortality for those who started aspirin after age 70.
The findings contradict prior work suggesting cancer-prevention benefits for younger populations.
Researchers advise against starting aspirin for cancer prevention in adults 70 and older because middle-aged benefits do not apply.

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Story summary

A study published in JAMA Oncology involving nearly 20,000 participants aged 70 and above found no reduction in overall cancer rates and a 15% increase in cancer mortality for those who started aspirin after age 70.
The findings contradict prior work suggesting cancer-prevention benefits for younger populations.
Researchers advise against starting aspirin for cancer prevention in adults 70 and older because middle-aged benefits do not apply.