In Japan, many people believe that blood type affects personality and health. Though the belief is based more on fashion than science, it's started to spread. Korea is now going through a blood-type craze. Interestingly, the traits attributed to certain blood types are different in Japan than they are in Korea. For instance, in Korea people with B-type blood are considered sensitive, while in Japan they are more self-centered.

This week, TV Tokyo's "Monday Entertainment" (7 p.m.) will present a three-hour special on blood type theories called " Kokoro to Karada no Ketsueki-gata" (Blood Types of the Mind and Body). The program will feature 20 celebrities categorized by blood type who will partake of experiments to find out which traits go with which blood types. The guests will also be given advice on how to overcome fatigue based on their individual blood type, as well as how to improve circulation. At the more frivolous end, tests will be conducted to find out which blood type is "most concered with food expiration dates," and which are "most narcissistic."

On Tuesday at 9 p.m., Nihon TV presents a special two-hour program called "The Power of Memory" which explores how we remember and how we forget using documented case studies.