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Health topics
… Shift Work Sleep Disorder On this page: What is shift work sleep disorder? What problems can it cause? Shift work sleep disorder is trouble sleeping because you work nights …
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… Medical Specialists On this page: Types of … Reproductive endocrinologist Respirologist Rheumatologist Sleep disorders specialist Spinal cord injury specialist Sports …
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… Eye Care Specialists On this page: Overview … or contact lenses. Ophthalmologists can diagnose all disorders that affect the eye. They can carry out any … or contact lenses. Ophthalmologists can diagnose all disorders that affect the eye. They can carry out any …
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… Sleep Problems Learning Center Learn about sleep problems Most people have sleep problems from time to time. But when you have trouble …
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… Sleep Apnea On this page: Health Tools … in tobacco relaxes the muscles that keep the airways open. Disorders of the hormone (endocrine) system. Disorders that … apnea and isn't just snoring. Children may need to see a specialist if they have sleep apnea. Learn more Sleep Apnea: …
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… Fatigue and sleep Last updated March 19, 2025 Everyone knows that sleep is important. Without it, you don't have the energy to get through your day. But sleep problems that go on for a long time can affect your …
Medical tests
… Sleep Studies On this page: Test Overview Why It Is Done How … It Feels Risks Results Test Overview Sleep studies are tests that record what happens to your … sleepwalking, night terrors, bedwetting, and REM behaviour disorders (RBD). Conditions such as periodic limb movement …
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… Stages of Sleep On this page: Overview Overview The sleep cycle is divided into two main stages: non-rapid eye … movement (non-REM) and rapid eye movement (REM). Non-REM sleep Non–rapid eye movement sleep has three stages: Stage …
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… Toddler sleep Last updated June 1, 2021 Healthy sleep habits are as important as healthy eating habits – sleep is an essential component of healthy living. On this …
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… Sleep Journal On this page: Overview Overview Fill out this sleep journal every morning for 1 to 2 weeks. It can help you see what gets in the way of a good night's sleep. It could also help your doctor know more about what …
