Diabetes is a notorious disrupter of sleep. The aches and pains of arthritis and other bone and muscle discomfort, including injuries, can keep you awake, because no matter how you lie, darn it, it still hurts. If you suffer from chronic fatigue syndrome or fibromyalgia, these added aches and pains bring more suffering and sleep deprivation. And I haven't even mentioned the big sleep thieves - sleep apnea, insomnia and other sleep disorders. Even the mind can betray you.
Depression is common in the elderly.
Dementia and Alzheimer's disease can rob one of the peace and happiness of the senior years. These are the years when we should be free to relax, enjoy our grandchildren, socialize and travel. Yet sometimes our health just does not co-operate. And sleep is an important part of our health. There are many reasons that health deteriorates as we grow older.