We have known for some time that there are sex differences when it comes to experiencing pain, with women showing a higher sensitivity to painful events compared to men. While we don't really understand why this is, it seems likely that both biological and psycho-social factors are involved. However, a new study published in Nature Neuroscience suggests that there may be a sex difference in the immune cells involved in the processing of pain signals. The results show that it is time to stop ignoring sex differences in research.
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