Excess alcohol consumption can cause dehydration in a variety of ways. Firstly, alcohol decreases the body's production of anti-diuretic hormone, which is used by the body to reabsorb water. read more
Alcohol is a diuretic, which means that it causes excessive urination (working at the level of brain). Plus there is a big amount of fluid you are taking which in itself contributes to more urine formation. read more
And yet, in small quantities we use alcohol as a social lubricant. But over time, too much alcohol can set off diabetes and malnutrition, and diseases of the central nervous system and the liver. A short-term side-effect is excessive urination. read more