I was on temazepam for 2 years, then was diagnosed with have a high grade Bladder Cancer. I did research on all my medications and came across a study that listed 10 sleeping pills which showed a connection with Bladder Cancer. Temazepam was #2. The study said that if you take more 34 pills a year, your odd of getting cancer increases by +30%. I'm not a mathematician but taking it every night for two years must have ramped up my chances by a considerable amount. My father was also taking temazepam every night and I warned him about that connection. He called me paranoid and kept taking it. About a year later, he also was diagnosed with the exact same Bladder Cancer that I got.