Aspirin, other painkillers may not reduce colorectal cancer risk for everybody
Particular genetic variants might render drugs’ effect nil or negative
![baby aspirin](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/03/ns_babyaspirin_free.jpg?fit=860%2C460&ssl=1)
RAISING RISK Painkillers like this baby aspirin have been associated with reducing the risk of colorectal cancer, yet they can actually boost the risk in rare cases, a new study finds.
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