Ongoing work in healthy aging (HA), led by George Rebok, PhD at the Johns Hopkins School of Public Health, has applied cognitive retraining to older healthy adults. Multiple, strong rationale for pursuing such applications of cognitive rehabilitation include the fact that the 65 and older population is growing (an estimated 20% of population (72 million) will be 65 and older by 2030), cognitive decline is most feared aspect of growing older, drug trial results addressing this challenge have been disappointing and, most importantly, cognitive impairments heavily affect the aging population. Specifically, 1 in 4 adults 70 years or older have a cognitive impairment without dementia and roughly 5.3 million people in the U.S. have Alzheimer's disease. Rebok and colleagues have applied Speed of Processing Training to a large cohort of healthy older adults (age 65+) and found a 33-48% risk reduction of dementia onset 10 years post treatment. These encouraging results suggest that providing cognitively enhancing treatments prior to the onset of dementia may in fact stave off the dementia process and provide older individuals with more years free of cognitive deficit.