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IMAGE: GLP1R neurons (red) play a critical role in detecting toxins in blood vessels (green) and initiating the nausea response. view more
Credit: Chuchu Zhang , Stephen Liberles
At some point, everyone experiences nausea. Whether it occurs after unwisely eating a week-old slice of pizza or as an accompaniment to a serious infection, that queasy, unsettling sensation centered around the stomach is a signal that something is amiss within the body and typically portends a bout of vomiting.
Most of the time, nausea is only temporary. But for some people, such as those on certain chemotherapy regimens, it can be severe, chronic and even life-threatening when it prevents patients from adhering to treatment.