A CHOP study has identified a gene associated with a higher demand for painkillers among children. ( Maya Kruchankova /<a href=Photo via ShutterStock) " title="shutterstock_163557260" width="1" height="1"/>

Gene variant plays part in pain tolerance, CHOP team finds

Ever wonder why you need to take twice as many pain pills as your friend for the same type of injury? Pain is influenced by a lot of fact ...

12 years ago

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