Despite Harris’s use of marijuana and alcohol, the autopsy revealed no substances in his system other than fluvoxamine (Luvox), a prescription medication he had been taking for approximately a year. The report also notes that he wore a shirt that read “Natural Selection.” Finally, Harris had a medical condition called pectus excavatum, which means he had a sunken chest. He had surgery at ages 12 and 13 to repair this. Despite the surgery, the autopsy notes that the pectus excavatum was still observable.