What Causes Insomnia? 9 Medical and Lifestyle Triggers Explained
Insomnia affects 35% of adults. Learn the 9 real medical and lifestyle triggers behind sleeplessness — and what doctors say you should do about each one.
Sameer Patel — Founder & Editor
Sameer Patel is the founder and editor of My Medicine Advisor. He is not a doctor or medical professional — before starting this site he worked in banking, and he now researches and edits health information full-time.
He started My Medicine Advisor to make clear, well-sourced health information freely available to anyone. Every article is researched from recognised authorities such as the WHO, CDC, NIH, and NICE, drafted with the help of AI tools, and edited by hand, with sources linked so readers can check them. The calculators on the site use established, published formulas, each one named so you can look it up yourself.
My Medicine Advisor is currently a one-person operation with no clinical review panel, and the site is open about that. If you're a qualified clinician or researcher interested in reviewing content, Sameer would genuinely like to hear from you via the contact page.
Excessive Daytime Sleepiness: Symptoms, Causes & When to Worry
Excessive daytime sleepiness affects 1 in 3 Americans. Discover the 10 warning symptoms, hidden medical causes, and the exact moment to call your doctor.
Waking Up at 3am Every Night: 9 Real Medical Causes and What to Do
Jolting awake at 3am every night? Discover the 9 real medical causes — cortisol spikes, sleep apnea, blood sugar crashes — and get a proven fix plan by cause.
Why Am I Always Tired No Matter How Much I Sleep? Doctors Reveal 11 Real Reasons (2026)
Always tired no matter how much you sleep? Learn the 11 real medical causes — from sleep apnea to thyroid dysfunction — and get a doctor-approved fix plan.
12 Warning Signs You Have a Sleep Disorder (Don’t Ignore These)
70 million Americans have a sleep disorder and don't know it. Learn the 12 warning signs — including the subtle ones your doctor might be missing.
What Is Circadian Rhythm? Your Body’s 24-Hour Master Clock Explained
Your circadian rhythm is your body's 24-hour internal clock controlling sleep, hormones, and health. Here's exactly how it works — and how to fix it.
Sleep Stages Explained: What Happens to Your Body Each Night
Learn what happens during each sleep stage every night — from deep sleep repair to REM brain reset — and why missing any stage leaves you exhausted.
How Many Hours of Sleep Do You Really Need by Age? [2026 Science-Backed Answer]
Most people get it wrong. Find out exactly how many hours of sleep you need by age — from newborns to seniors — based on 2026 AASM and NIH guidelines.
What Is REM Sleep — And Why Skipping It Is Quietly Wrecking Your Brain
REM sleep is your brain's nightly reset — but most Americans aren't getting enough. Discover the science, warning signs, and proven fixes.
Sleep Disorders: Doctors Explain Symptoms, Causes & Every Treatment Option (2026 Guide)
Over 70 million Americans have a sleep disorder — and most go undiagnosed for years. Doctors reveal every symptom, cause, and treatment that actually works.