Beware These Common 5 Bad Breath Causes

Alcohol. Consuming alcohol is another reason people have bad breath. First, alcohol causes a decrease in saliva. With dry mouth, bad breath flourishes. Drinking alcohol promotes bacteria associated with gum disease, also a common cause of bad breath. Alcohol can also increase gastric acid production in the body. This causes damage to the lining of the stomach and can activate acid reflux, another cause of breath odor.