Is it possible to be lactose intolerant without suffering from diarrhea but being nauseated and throwing up instead?

Yes, it is possible to be lactose intolerant and experience symptoms like nausea and vomiting instead of diarrhea. Lactose intolerance occurs when the body lacks sufficient lactase enzyme to digest lactose, leading to various gastrointestinal symptoms. While diarrhea is common, some individuals may experience nausea or vomiting as their primary response to lactose ingestion. Symptoms can vary widely among individuals depending on their sensitivity and the amount of lactose consumed.