why do i feel so nauseous

Feeling nauseous can have many possible causes. Common reasons include digestive issues such as acid reflux (GERD), food poisoning or stomach infections, eating certain foods or overeating, medication side effects, motion sickness, migraines, pregnancy (morning sickness), anxiety or stress, dehydration, and intense pain. Other causes might be inner ear problems, brain injuries, or chronic medical conditions affecting the digestive system. Nausea can also arise from neuroendocrine responses related to lack of sleep or hormonal changes. If nausea is persistent, severe, or accompanied by other symptoms like chest pain, severe headache, confusion, or vomiting lasting more than 24 hours, it is important to seek medical advice as it may signal a more serious issue.