Researchers at a Japanese national medical institute and others have developed an affordable and easy method to diagnose Alzheimer's disease, only requiring a small amount of blood for testing, they said in the British science journal Nature on Wednesday.The new method to check the buildup of a protein in the brain, which is believed to have links with the disease, potentially enables "broader clinical access and efficient population screening," according to the team including Nobel chemistry laureate Koichi Tanaka of Shimadzu Corp.While the cause of Alzheimer's, the most common form of dem…READ FULL ARTICLE