By Stephanie Booth, Mar 2026

“Untreated OSA is strongly linked to increased cardiovascular risk, hypertension, and cognitive impairment,” says Alex Dimitriu, MD, a sleep medicine doctor and psychiatrist in Menlo Park, California. “Put more simply, poor sleep is terrible for your brain and your body, as well as your moods.” When your doctor diagnoses you with OSA, they’ll likely suggest you start using a continuous positive airway pressure (CPAP) machine. Dimitriu says this portable device is the gold standard for treating the condition. “[A CPAP] provides additional air to support your airway and prevent it from collapsing during sleep,” he says.

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By Kinsley Searles, Mar 12, 2026

Subjectively, the Reviews team loves sunrise alarm clocks for their soothing warm light, and our testers have reported feeling refreshed while using them, so we’re glad to see that our experience is backed by the experts. Dimitriu said that morning light at 300 lux — a standard level of illumination — can improve morning alertness, sleep quality, and sleep inertia (the feeling of being sleepy after waking up). Plus, the light can help late risers wake up a bit earlier.

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By Korin Miller, Mar 11, 2026

Deep sleep is stage 3 non-REM, which is the deepest phase of non-REM sleep, while light sleep is the initial non-REM phases of sleep, or stages 1 and 2. “Deep sleep—or slow wave sleep—is also essential, and happens more in the first half of the night,” says Alex Dimitriu, M.D., psychiatrist and sleep medicine physician, and founder of Menlo Park Psychiatry & Sleep Medicine. “The body is maximally resting during this time, and the mind is cleaning up toxins accumulated during the day.”

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By Rachel Sacks, Mar 10, 2026

While the difference may not seem like much, women often bear the brunt of a lack of sleep due to a combination of biological and social factors, according to Dr. Alex Dimitriu, a double board-certified psychiatry and sleep medicine doctor. “Hormonal fluctuations throughout the life cycle, menstruation, pregnancy and menopause all play a significant role in disrupting sleep architecture and sleep quality,” Dimitriu, the founder of Menlo Park Psychiatry & Sleep Medicine, told The Post.

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By Elizabeth Millard, Feb 25, 2026

It can be an effect of the disorder itself, of medications used to manage bipolar, or sometimes both, says Alex Dimitriu, MD, a psychiatrist in private practice and a medical reviewer for Everyday Health. “Patients frequently describe this as ‘cognitive dulling,’ where processing speed slows down and focus becomes difficult to maintain,” he explains. Here’s a look at contributing factors, along with strategies that may help clear the mist.

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By Elizabeth Millard, Feb 23, 2026

When it comes to how many hours of shuteye you get on average, the common recommendation for most adults is to clock at least seven hours each night, and that’s a solid general guideline, says Alex Dimitriu, M.D., a sleep medicine specialist and the founder of Menlo Park Psychiatry & Sleep Medicine in California. However, it’s helpful to keep in mind that sleep duration can fluctuate based on things like age, lifestyle, illness recovery, pregnancy, or even existing underlying health conditions that you may, or you may not be, aware of. “For most adults, seven hours is the minimum needed to function well, with nine hours as the maximum, but individual needs can vary quite a bit,” Dr. Dimitriu notes.

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By Tara Haelle, Feb 16, 2026

For those who cannot find a therapist, the prescription-only digital therapeutic app SleepioRx was cleared by the FDA in 2024 and “offers an accessible, evidence-based CBT-I option,” said Alex Dimitriu, MD, a psychiatrist and sleep medicine physician at Menlo Park Psychiatry and Sleep Medicine in Menlo Park, California.

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