News Can too little or too much sleep increase risk for Alzheimer’s? Study supports ‘sweet spot’ September 8, 2021Keira Wingate, USA TODAYComments Off on Can too little or too much sleep increase risk for Alzheimer’s? Study supports ‘sweet spot’ A new study by JAMA Neurology shows that short sleepers, less than six hours, are at a greater risk of developing Alzheimer's disease.