My internal/GAS medicine physician, M.D. tells me the facts that to receive anal sex, anal play, anal toys frequently will greatly increase the risk for anal cancer. The most anal toys or sex toys make by plastic which will release a lot poison chemicals into rectum and lower part of the colon, which are the other factors causing cancers there. I trustee advice from M.D. who have more formal medical training than some of psychological doctors's openions on anal sex, who do not have a formal medical training, no matter they hold PhD or not in psychology. My M.D. doctor's advice are exactly match with same openions on anal sex related to anal cancer, posted and provided by another M.D. doctor who is specialized and medical educator on humon being's sextual health for many years.
Use glass dildo
Use a condom to cover the plastic toy