Nausea is often related to overeating, food poisoning, or ulcer or gallbladder disease, but it can also be a symptom of high blood pressure. If there is no history of diseases affecting the gallbladder, ulcers, or dietary changes that could explain the symptom and yet a person finds himself feeling nauseous or vomiting on repeated occasions, a doctor may look at blood pressure as well as other potential causes. Early detection of high blood pressure reduces the likelihood of serious side effects.

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