Even simple exercise may help aging brain, study hints

New research hints that even a simple exercise routine just might help older Americans with mild memory problems.Doctors have long advised physical activity to help keep a healthy brain fit. But the government-funded study marks the longest test of whether exercise makes any difference once memory starts to slide — research performed amid a pandemic that added isolation to the list of risks to participants' brain health.Researchers recruited about 300 sedentary older adults with hard-to-sp