U.S. addiction specialist and television personality Dr. Drew Pinsky revealed to People.com Tuesday he had surgery during the summer to treat prostate cancer. \"I was doing [the daytime chat show] \'Lifechangers\' and my HLN show was going. My wife and I had this great relationship, very active sexually. This could screw everything up. It was a terrible feeling,\" Pinsky said about hearing the diagnosis from his doctors. Pinsky, 55, returned to work 10 days after his operation in July and has since made a complete recovery, People.com said. \"I\'m cancer-free,\" Pinsky said. \"The erectile function is normal, sex drive is normal, bladder works normally. And I don\'t have to worry about prostate cancer.\" Pinsky is the former host of the reality shows \"Celebrity Rehab with Dr. Drew\" and \"Rehab with Dr. Drew.\"