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People with MCI have been found to be at greater risk for developing dementia; but in many cases, their memory problems stay the same or even improve.

This progressive gradient places SCD as an intermediate stage between CN and MCI.

While it is one of the strongest predictors of cognitive decline, and it exerted substantial influence on cognitive abilities among those classified CN and SCD, that influence waned among those classified MCI or AD.

"But that is not the case in those individuals who have a diagnosis of MCI or Alzheimer's disease. For them, cognitive function is more associated with how advanced their disease is, as indicated by general measures of clinical status on standardized cognition tests like the Montreal Cognitive Assessment Test."

Although MCI has little impact on the affected individuals daily living, they have nevertheless an increased risk of developing Alzheimer's dementia within a few years.