About Melissa Chefec

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Entries by Melissa Chefec

How the Parasympathetic Nervous System Influences Your Mental Health

By Kendra Cherry, Oct 20, 2026 “While the sympathetic system helps you deal with things and get stuff done, the parasympathetic system helps you rest, heal, digest, and recover,” explains psychiatrist Alex Dimitriu, MD. It’s the sympathetic system that kicks into gear when you are faced with some type of stressor or threat and prepares you to […]

Daylight Saving Time Is Ending — What Sleep Docs Want You to Know

By Lauren Bedosky, Medically Reviewed by Alex Dimitriu, MD, Oct 16, 2026 Daylight saving time will officially end at 2 a.m. on Sunday, November 1, 2026, when the clocks fall back one hour. Many Americans will get an extra hour of sleep as they return to standard time. People living in most of Arizona and […]

Radar Evolving Into a Precise Contactless Vital Sign Monitor

By Caitlin Taylor So, Oct 16, 2026 Alex Dimitriu, MD, sleep medicine physician, was independent from the hypoglycemia study and wasn’t yet convinced. “Given the significance of hypoglycemia, we’d need to see reliable, repeatable detection that accounts for all the variables that could shift this physiologic data — like sleep stages, sleep apnea, or other […]

Sleep Better With Sjögren’s Disease

By Elizabeth Millard, Oct 15, 2026 Unfortunately, getting enough sleep with this chronic condition can be tricky, since its symptoms can be disruptive, according to Alex Dimitriu, M.D., a sleep medicine specialist and the founder of Menlo Park Psychiatry & Sleep Medicine in Menlo Park, CA. “Because this condition is characterized by dryness and discomfort, that […]

4 expert-recommended light therapy lamps to boost your winter energy

By Zoe Malin, Oct 2, 2026 As the sun rises later and sets earlier during the winter months, odds are you feel some combination of sleepy, less motivated and plain old glum during the day. And to some degree, that’s totally normal, said Dr. Alex Dimitriu, who specializes in psychiatry and sleep medicine, and is the […]

Insomnia Isn’t Just Exhausting — It May Raise Your Risk of Stroke, Dementia

By Mandy French, Sep 30, 2026 The sympathetic nervous system is part ofTrusted Source the body’s involuntary nervous system that triggers your “fight or flight” response in stressful or dangerous situations. “Being too wired can impair sleep, and impaired sleep, in turn, can make us too wired. A state of higher adrenaline and cortisol raises […]

The Worst Time to Go to Bed, According to Sleep Doctors

By Adam Meyer, Sep 28, 2026 Melatonin and cortisol are two hormones critical to sleep, and both of them follow a precise daily schedule. Melatonin, which signals to your body that it’s time to sleep, peaks in the evening and declines as the night progresses. Cortisol, your body’s natural alerting hormone, increases in the early […]

Book Lovers May Have a Lower Risk of Alzheimer’s, Study Finds

By Deborah Oladapo, Sep 24, 2026 A 2015 survey by The Reading Agency found that among adults who read just 30 minutes a week, 64% reported a better understanding of other people’s feelings, while 74% described a positive effect on their overall mental health. Over half of adults also said reading made them feel more […]

Sleep Experts Share 6 Ways to Fall Back Asleep When You Wake Up at 3 A.M.

By Joy Manning, Sep 23, 2026 A body scan is a type of meditation that involves bringing your attention to each part of your body, one at a time, often starting at your toes and working upward. It can give a racing mind something calm and physical to focus on instead of letting your thoughts […]

5 Simple Habits That Will Help You Fall Asleep Fast

By Minda Zetlin, Sep 20, 2026 You’ve likely read or heard that you should not look at screens during the last hour before bed. That’s good advice almost everyone knows, and almost no one follows. But even if you can’t resist a little pre-bed phone use, you can still improve your sleep. Instead, try taking a […]

Love to Read? Your Book Habit May Lower Alzheimer’s Risk by 33%

By Mandy French, Sep 15, 2026 Alex Dimitriu, MD, double board certified in Psychiatry and Sleep Medicine, and founder of Menlo Park Psychiatry & Sleep Medicine, who wasn’t involved in the review, told Healthline, “Reading builds empathy, improves focus, and offers a healthy digital detox. Reading also fires up the imagination and provides a low […]

Common bedroom mistake could be quietly taking a toll on your health, experts say

By Melissa Rudy, Sep 14, 2026 “Shift workers, children, older adults and individuals with insomnia or mood disorders are especially vulnerable to the effects of light on sleep depth,” Alex Dimitriu, M.D., a double board-certified sleep medicine doctor and founder of Menlo Park Psychiatry & Sleep Medicine, told Fox News Digital. Click HERE for the […]

September 10 Is World Suicide Prevention Day—Here’s Where To Find Support

By Claire Wolters, Sep 10, 2026 Alex Dimitriu, M.D., a psychiatrist and founder of Menlo Park Psychiatry & Sleep Medicine, adds that mental health providers can play an important role in initiating conversations about suicide. “It is a key role of mental health workers, clinicians and physicians in general to serve as role models for a […]