In the study , men who preferred their burgers well-done had double the cancer risk . `` This is another piece of evidence for the notion that red meat , particularly grilled meat , contains carcinogens that may relate to prostate cancer , '' says Ronald D. Ennis , M.D. , director of radiation oncology at St. Luke 's -- Roosevelt Hospital Center , in New York City , who was not involved in the study . Comment: Heterocyclic amines ( HCAs ) and polycyclic aromatic hydrocarbons ( PAHs ) cause several types of cancer .
In the study , men who preferred their burgers well-done had double the cancer risk . Comment: Heterocyclic amines ( HCAs ) and polycyclic aromatic hydrocarbons ( PAHs ) cause several types of cancer .