 Carter tested negative for illegal drugs, but tested positive for "a mixture of benzodiazepines with opiates", a potentially dangerous combination of prescription medications that Carter said he took for anxiety and sleep.He was malnourished and underweight at 115 pounds (52 kg), with a body mass index of 17 (a BMI of 18.5 to 25 is normal range).Carter was advised to enter a drug rehabilitation program and remain under medical care.