9. Menopause
If you’re a woman, your period stops naturally around middle age, and your body slowly stops making the hormones progesterone and estrogen. This often causes hot flashes, where a surge of adrenaline raises your body temperature and makes you sweat. This can wake you up, sometimes many times each night. Your doctor may be able to prescribe hormones or other medications to stop these flashes and help you sleep.
10. Medical Problems
Arthritis and back pain can wake you up. Allergies and asthma might interfere with your breathing at night. Parkinson’s disease can cause body movements that disrupt your shut-eye. Alzheimer’s agitates some people during normal sleeping hours. When you treat your illness, you might improve your sleep problems as well.