Current research suggests that there is a possible relationship between eating meat, especially beef and cured meats, and an increase in the risk of breast cancer. This relationship is uncertain for eating other meats such as pork and poultry. Eating fish appears to be unrelated to breast cancer risk. Some studies suggest that cancer-causing chemicals are formed when meat is cooked at high temperatures and for a long time. The results of this research are not entirely clear because of limits in the studies that have been published so far.