If you smoke top quality Bud every great once and a while "no tobacco at all in it." like for example,
once every couple of months I seriously doubt It will effect you in any noticable way. There is no way the government can tax bud, that's why it is illegal, that's why there are commercials about how bad it is, that's why there are commercials about alcohol trying to get you to buy it instead because they can tax it. Most people aren't going make there own liquor. Therefore the government can tax it make money and laugh at your cirrhosis.