You always opt for extra pepperoni on your pizza.
According to the WHO, there is a link between eating processed or red meat and developing certain kinds of cancers. A 2015 report found strong evidence for a relationship between processed or red meat like bacon, hot dogs, sausages, and ground beef and colorectal cancer. There is also evidence that these types of meat might contribute to the growth of pancreatic and prostate cancer.
The WHO now ranks processed meat as a Group 1 carcinogenic, which is the same category as cigarettes and arsenic. This category includes substances that have been studied intensively enough for there to be strong evidence that they cause cancer in humans.