Eatinghotdogs，hamandotherprocessedmeatcancausecolorectal（直肠的）cancer，andeatingredmeat"probably"canalsocausecancer，theWorldHealthOrganization'scanceragencyreportedMonday．KurtStraifoftheInternation

　　Eating hot dogs，ham and other processed meat can cause colorectal （直肠的） cancer，and eating red meat"probably"can also cause cancer，the World Health Organization's cancer agency reported Monday．

　　Kurt Straif of the International Agency for Cancer Research said the risk of developing colorectal cancer from eating processed meat remains small but rises with the amount consumed．Consuming red meat was linked to colorectal cancer，but the link was not as strong，the IARC report said．

　　"In view of the large number of people who consume processed meat，the global effect on cancer incidence is of public health importance，"Straif said．

　　"Red and processed meat are among 940agents reviewed by IARC and found to show some level of theoretical‘hazard'（危险），"institute spokeswoman Betsy Booren said．

　　Processed meat was defined as meat transformed through salting，curing，fermentation （发酵），smoking"or other processes to improve flavor or preservation．"The most common processed meats consumed in the U．S．include hot dogs，sausages，bacon，ham，canned meat and beef jerky （牛肉干）．

　　The IARC said it considered more than 800studies that investigated possible links between a dozen types of cancer with the consumption of red meat or processed meat in many countries and populations with diverse diets．

　　"The experts concluded that each 50gram portion-about 1.75ounce，or about two strips of bacon-of processed meat eaten daily increases the risk of colorectal cancer by 18%"，the IARC said．

　　IARC director Christopher Wild said the findings support current public health recommendations to limit intake of meat but stressed that red meat has nutritional value．He said governments and international regulatory agencies must balance the risks and benefits of eating red meat and processed meat"to provide the best possible dietary recommendations．"

　　28．What does the passage mainly want to tell