Willie Nelson has a brand of pot named after him, but he says he no longer smokes marijuana—or anything else. The 86-year-old singer tells KSAT that he has been experiencing breathing-related health problems lately so he has started taking better care of himself. "I have abused my lungs quite a bit in the past, so breathing is a little more difficult these days and I have to be careful," he says. "I started smoking cedar bark, went from that to cigarettes to whatever," he adds. "And that almost killed me." Nelson, who smoked his first joint in 1954, said earlier this year that pot probably "saved his life" when he was younger by helping him cut back on drinking, USA Today reports. He says touring is helping him stay healthy and he has no intention of giving it up. (More Willie Nelson stories.)