The number of American’s with Alzheimer’s disease is growing each year. In 2015, an estimated 5.3 million Americans of all ages had it, according to the Alzheimer’s Association. Almost two-thirds of the patients are women. The disease is an irreversible, progressive brain disorder that slowly destroys cognitive capabilities and eventually the ability to carry out the simplest tasks, according to the National Institute on Aging. Scientists say that damage to the brain starts as early as a decade or more before memory and other cognitive problems appear.