Insomnia Demystified: Why It Happens and How CBT-I Helps

Insomnia is the most common sleep disorder, defined by trouble falling or staying asleep and daytime consequences like fatigue and difficulty concentrating. Chronic insomnia is diagnosed when symptoms occur at least three nights per week for three months or longer. It typically arises from a mix of biological, psychological, and lifestyle factors—stress, anxiety/depression, medical conditions, menopause, medications, caffeine/alcohol use, irregular schedules, and screen time. The most effective long-term treatment is cognitive behavioral therapy for insomnia (CBT-I), which changes thoughts and behaviors around sleep and builds healthier routines. Sleep hygiene practices (regular bed/wake times, limiting caffeine and alcohol, a cool dark room, and minimizing late-night screens) can help, while medications may offer short-term relief but are not ideal long-term solutions. Seek medical evaluation if sleep problems significantly impair daytime functioning or are accompanied by loud snoring, gasping, restless legs, or mood changes.