According to a large-scale study which was published in JAMA Neurology, walking 9,800 steps a day reduces your risk of cognitive impairment by up to 50%. Walking 3,800 steps a day improves your chances of avoiding dementia by 25%. Researchers monitored the daily step counts of more than 7,800 adults between the ages of 40 and 79 over a seven-year period. “I think this reinforces recommendations that we can make to people that walking is likely to be beneficial,†Dr. Ronald Peterson, director of the Mayo Clinic Alzheimer’s Research Center, told AARP Bulletin.