Glycemic thresholds for subjective symptomatic awareness of hypoglycemia and for the onset of cognitive dysfunction in young and elderly nondiabetic males. Glycemic thresholds for subjective symptomatic awareness of hypoglycemia and for the onset of cognitive dysfunction in young and elderly nondiabetic males. Based on data derived from Matyka et al. (13). Figure reproduced from McAulay and Frier in Diabetes and Old Age (57), with permission of John Wiley and Sons, Chichester, U.K. Nicola N. Zammitt, and Brian M. Frier Dia Care 2005;28:2948-2961 ©2005 by American Diabetes Association