Appendicitis occurs when the appendix becomes blocked, often by stool, a foreign body, or cancer. Blockage may also occur from infection, since the appendix swells in response to any infection in the body.
A familial generation is a group of living beings constituting a single step in the line of descent from an ancestor. In developed nations the average familial generation length is in the high 20s and has even reached 30 years in some nations.
Generation X is one descent after the Baby Boom generation, which is currently the largest generation. The Baby Boomers were born in the years following World War II, roughly 1944 - 1964. Today, there are approximately 80 million Baby Boomers.