主题：【讨论】肿瘤治疗：进展中的瓶颈还是瓶颈中的进展？ -- chalet

Reflecting on the reasons for the declines in cancer rates that are now being seen, Dr. Lichtenfeld suggests that "not all of this was due to some remarkable breakthrough in medical treatment, although some of it certainly is due to better cancer care. Much of it has to do with stopping smoking, or not starting for that matter, especially among men. Much of it has to do with better screening and early detection of breast and colorectal cancer, and perhaps prostate cancer (although we are not certain about the latter). Some of it may have to do with lifestyle changes, such as increased awareness of the importance of exercise and diet in reducing cancer risk."