Where a plaintiff improved dramatically when sober in a rehabilitation program, the administrative law judge did not err by concluding that alcoholism was material to plaintiff’s disability.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Magistrate Judge Iain D. Johnston.John Barrett started drinking alcohol as a teenager. He began to drink heavily when he was 19 years old, around the time his brother committed suicide.At age 27, he was hospitalized and reported depression and suicidal …