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A diagnosis of AlzheimerÂ’s, sadly, has become almost like a rite of passage in so-called developed countries. AlzheimerÂ’s is considered the most common form of dementia, which is defined as a serious loss of cognitive function beyond what is expected from normal aging in previously unimpaired persons. A 2006 study estimated that 26 million people throughout the world suffer from this condition, and that by 2050, the prevalence will quadruple, by which time one in 85 people worldwide will be afflicted with the disease. Given the global extent of the problem, interest is growing in safe and effective preventive and...