Can excessive alcohol drinking cause fainting?

Yes: Excessive alcohol can cause a myriad of symptoms, and unsteadiness and loss of consciousness is not uncommon.

Alcohol: Excessive alcohol drinking can certainly cause fainting through a number of different mechanisms. Its one of the reasons not to drink to excess.

You bet it can: Like any other substances, excess is potentially dangerous, and an overdose can be deadly. Fainting, passing out, seizures, coma, all can be part of the picture. Sounds like you need help. Contact aa and get control of your drinking. Best of luck.

Definitely, yes: Alcohol dilates blood vessels and works as a diuretic (increases fluid loss). These 2 factors can lead to drop in blood pressure which can cause fainting. In addition, it can induce abnormal heart rhythms, and especially with high intake over time, can lead to weak heart muscle. Black outs can occur from the neurological effect of alcohol, too.