People with memory problems who are depressed are more likely to develop Alzheimer"s disease compared to people who are not depressed, according to a study published in the June 16, 2009, print issue of Neurology®, the medical journal of the American Academy of Neurology. However, the research also shows that the popular Alzheimer"s drug donepezil may delay the progression to Alzheimer"s disease for depressed people with mild cognitive impairment (MCI) or memory problems.