Though sleep disturbance can be caused by side effects of prescription medications or waking for frequently to go to the bathroom, getting older does not necessarily mean sleep quality or quantity must decline.
From the attached article (link below):
"I think to some extent what this study tells you is that when a senior citizen complains of feeling tired or not feeling well rested, that should not be written off," Werber said. "Often, I think the answer would be, 'Well, you're older, so you're not getting enough sleep.'"
Dr. Dielle Raymond, ND