What does a hangover primarily result from?

The primary cause of a hangover is excessive alcohol consumption. When alcohol is ingested, it acts as a diuretic, which increases urine production and leads to a loss of fluids and electrolytes, thereby contributing to dehydration. Additionally, excessive drinking can trigger a range of biological changes in the body, including an inflammatory response, disturbances in blood sugar levels, and a decrease in the production of certain hormones. These factors collectively contribute to the various symptoms experienced during a hangover, such as headaches, fatigue, nausea, and sensitivity to light and sound.

While dehydration is a significant factor in experiencing hangover symptoms, it is actually a consequence of excessive alcohol consumption rather than the primary cause itself. Likewise, lack of sleep and high-stress levels can exacerbate the feelings associated with a hangover but are not the main contributors to its onset. Understanding the central role of alcohol consumption in the development of a hangover helps clarify why it is important to drink responsibly and be aware of one’s limits.