Debbie mentioned a mum who felt nauseous when double pumping.

I have read about a lecture given by Ann-Marie Widstom where she talked
about gastric hormones being released when breastfeeding. Apparently these
sometimes make mothers feel nauseous. Could this be more pronounced while
double pumping, perhaps? I have heard that you get a bigger prolactin
response when double pumping. The solution is to eat something before
feeding/pumping, so that hormones are not released into an empty stomach.

Joy Anderson IBCLC
Perth, Western Australia