Researchers have found that heavy alcohol use rewires the brain and makes it harder for alcoholics who have suffered a traumatic experience to recover psychologically. Although the researchers used mice in their study, it has long been known that there is a link between alcoholism and anxiety disorders like PTSD. In the study, one group of mice was given doses of alcohol while another group was not. The mice were trained with mild electric shocks to fear the sound of a brief tone. When the tone was played without the electric shock, the mice that were not exposed to alcohol gradually stopped fearing it, but those with alcohol exposure continued to show fear.
Read the full article here: Mouse Study Find Heavy Alcohol Use Slows Trauma Recovery