The February death of former NFL wide receiver Vincent Jackson was due to chronic alcohol use, the Hillsborough County (Fla.) Medical Examiner announced Wednesday. The medical examiner ruled the death “natural.” Jackson, who was 38, was found dead in a hotel room in Brandon, Fla. Earlier this week, the Concussion Legacy Foundation announced that Jackson was diagnosed with Stage 2 chronic traumatic encephalopathy (CTE), the progressive brain disease that has affected many football players. Jackson played 12 NFL seasons with the then-San Diego Chargers (2005–11) and Tampa Buccaneers (2012–16). He was a three-time Pro Bowl selection who caught 540 passes for 9,080 yards and 57 touchdowns. In the months prior to his death, Jackson reportedly dealt with depression, progressive memory loss, mood swings, paranoia, and extreme social isolation—all considered symptoms of CTE. According to the autopsy, Jackson suffered from alcoholic cardiomyopathy, hepatic steatosis and fibrosis, esophageal varices, ascites, jaundice, remote …