Five popular hangover cures, reviewed by experts

From black coffee to a hair of the dog – Sally Adams and Craig Gunn explain the science behind popular hangover remedies

It’s a common misconception that hangovers are mainly the result of dehydration. An evening of heavy drinking can lead to inflammation of the stomach and intestines, poor-quality sleep and the production of toxic substances that lead to vomiting, sweating and an increased heart rate. Research also suggests that hangovers can hamper the ability to concentrate and remember information.