Connect with us

health and wellness

Sleep loss rewires the brain for cravings and weight gain – a neurologist explains the science behind the cycle

Published

on

Last Updated on June 21, 2025 by Daily News Staff

Sleep loss
Getting enough sleep is one of the most effective ways to restore metabolic balance in the brain and body. SimpleImages/Moment via Getty Images
Joanna Fong-Isariyawongse, University of Pittsburgh You stayed up too late scrolling through your phone, answering emails or watching just one more episode. The next morning, you feel groggy and irritable. That sugary pastry or greasy breakfast sandwich suddenly looks more appealing than your usual yogurt and berries. By the afternoon, chips or candy from the break room call your name. This isn’t just about willpower. Your brain, short on rest, is nudging you toward quick, high-calorie fixes. There is a reason why this cycle repeats itself so predictably. Research shows that insufficient sleep disrupts hunger signals, weakens self-control, impairs glucose metabolism and increases your risk of weight gain. These changes can occur rapidly, even after a single night of poor sleep, and can become more harmful over time if left unaddressed. I am a neurologist specializing in sleep science and its impact on health. Sleep deprivation affects millions. According to the Centers for Disease Control and Prevention, more than one-third of U.S. adults regularly get less than seven hours of sleep per night. Nearly three-quarters of adolescents fall short of the recommended 8-10 hours sleep during the school week. While anyone can suffer from sleep loss, essential workers and first responders, including nurses, firefighters and emergency personnel, are especially vulnerable due to night shifts and rotating schedules. These patterns disrupt the body’s internal clock and are linked to increased cravings, poor eating habits and elevated risks for obesity and metabolic disease. Fortunately, even a few nights of consistent, high-quality sleep can help rebalance key systems and start to reverse some of these effects.

How sleep deficits disrupt hunger hormones

Your body regulates hunger through a hormonal feedback loop involving two key hormones. Ghrelin, produced primarily in the stomach, signals that you are hungry, while leptin, which is produced in the fat cells, tells your brain that you are full. Even one night of restricted sleep increases the release of ghrelin and decreases leptin, which leads to greater hunger and reduced satisfaction after eating. This shift is driven by changes in how the body regulates hunger and stress. Your brain becomes less responsive to fullness signals, while at the same time ramping up stress hormones that can increase cravings and appetite. These changes are not subtle. In controlled lab studies, healthy adults reported increased hunger and stronger cravings for calorie-dense foods after sleeping only four to five hours. The effect worsens with ongoing sleep deficits, which can lead to a chronically elevated appetite.
Sleep is as important as diet and exercise in maintaining a healthy weight.

Why the brain shifts into reward mode

Sleep loss changes how your brain evaluates food. Imaging studies show that after just one night of sleep deprivation, the prefrontal cortex, which is responsible for decision-making and impulse control, has reduced activity. At the same time, reward-related areas such as the amygdala and the nucleus accumbens, a part of the brain that drives motivation and reward-seeking, become more reactive to tempting food cues. In simple terms, your brain becomes more tempted by junk food and less capable of resisting it. Participants in sleep deprivation studies not only rated high-calorie foods as more desirable but were also more likely to choose them, regardless of how hungry they actually felt.

Your metabolism slows, leading to increased fat storage

Sleep is also critical for blood sugar control. When you’re well rested, your body efficiently uses insulin to move sugar out of your bloodstream and into your cells for energy. But even one night of partial sleep can reduce insulin sensitivity by up to 25%, leaving more sugar circulating in your blood. If your body can’t process sugar effectively, it’s more likely to convert it into fat. This contributes to weight gain, especially around the abdomen. Over time, poor sleep is associated with higher risk for Type 2 diabetes and metabolic syndrome, a group of health issues such as high blood pressure, belly fat and high blood sugar that raise the risk for heart disease and diabetes. On top of this, sleep loss raises cortisol, your body’s main stress hormone. Elevated cortisol encourages fat storage, especially in the abdominal region, and can further disrupt appetite regulation.

Sleep is your metabolic reset button

In a culture that glorifies hustle and late nights, sleep is often treated as optional. But your body doesn’t see it that way. Sleep is not downtime. It is active, essential repair. It is when your brain recalibrates hunger and reward signals, your hormones reset and your metabolism stabilizes. Just one or two nights of quality sleep can begin to undo the damage from prior sleep loss and restore your body’s natural balance. So the next time you find yourself reaching for junk food after a short night, recognize that your biology is not failing you. It is reacting to stress and fatigue. The most effective way to restore balance isn’t a crash diet or caffeine. It’s sleep. Sleep is not a luxury. It is your most powerful tool for appetite control, energy regulation and long-term health. Joanna Fong-Isariyawongse, Associate Professor of Neurology, University of Pittsburgh This article is republished from The Conversation under a Creative Commons license. Read the original article.

Discover more from Daily News

Subscribe to get the latest posts sent to your email.

health and wellness

Stacking Healthy Habits for Progress, Not Perfection

Healthy Habits: Many struggle with building healthier habits due to unrealistic expectations rather than lack of motivation. The American Heart Association’s My Life Check tool offers personalized heart health insights, helping to set attainable goals. Simple lifestyle changes—focused on nutrition, movement, sleep, and stress management—can gradually lead to significant health improvements.

Published

on

Despite the best of intentions, it’s common for plans to build healthy habits to fall flat. Often, the culprit isn’t a lack of motivation or discipline; rather, it’s unrealistic expectations. Understanding your personal health needs and the challenges you need to overcome can help give you a more realistic roadmap toward better health.

(Feature Impact) Despite the best of intentions, it’s common for plans to build healthier habits to fall flat. Often, the culprit isn’t a lack of motivation or discipline; rather, it’s unrealistic expectations.

Overhauling your lifestyle requires a level of commitment that isn’t always practical. Understanding your personal health needs and the challenges you need to overcome can help give you a more realistic roadmap toward better health.

Tools to Guide You
Every plan needs a starting point and there are many reputable sources that can help guide you toward a plan that addresses your personal health needs.

For example, the American Heart Association introduced My Life Check, a simple, free tool to help individuals understand their heart health and what’s driving it. Users answer simple questions about their daily habits and health factors to get a personalized Heart Health Score in minutes.

The results are private and downloadable, giving you full control of your information. The tool turns big goals into small, specific actions you can start right away. Knowing your numbers relative to your heart health (and where you are in comparison to target ranges for optimal health) can help you decide how to build a better map to get you where you want to be.

While the report is customized to each individual, no personal data is stored and answers are only used to calculate health scores and provide personalized recommendations and practical steps to improve your health, so you can use your results to focus on what matters most to you. Every small step you take, such as moving more, eating smarter, sleeping better or managing stress, can add up over time.

17763 A detail embed1

Finding Your Path
Once you’re armed with data and know where you stand on your heart health numbers, small steps become clearer and more manageable. That knowledge makes it easier to choose one area to focus on, such as getting more sleep, taking daily walks or adding more color to your meals.

Healthy changes don’t need to be expensive or complicated. The best habits are ones that fit real life when every action you take moves you closer to your goals.

Eat Smart
Choose foods that help you feel your best, one meal at a time. Add more color to your plate and focus on balance, not restriction. Simple, affordable swaps can make a real difference.

Move More
Find movement that fits your life, such as a walk, a stretch or dancing while you cook. Every bit of activity counts and it all supports your heart and mind. Move for joy, not just for results.

Sleep Well
Rest is a foundation of good health, not a reward. Protect your bedtime routine and give your body the recovery it deserves. Notice how good sleep makes everything else easier.

Manage Stress
Check in with yourself regularly, both mentally and emotionally. Create simple moments to pause, breathe, laugh or step outside. Connection, kindness and calm all support a healthy heart.

Advertisement
Get More From A Face Cleanser And Spa-like Massage

Staying motivated and on track is also easier when you can check back in, see your progress and realize the steps you’re taking are making an impact. Checking in every few months to see how you can grow gives you the chance to celebrate your progress, learn from challenges and keep building lasting habits that feel good.

To get started with personalized tips to set your own health goals, visit heart.org/mylifecheck.

Photos courtesy of Shutterstock

    <img src="https://ssl.google-analytics.com/collect?v=1&amp;tid=UA-482330-7&amp;cid=1955551e-1975-5e52-0cdb-8516071094cd&amp;sc=start&amp;t=pageview&amp;dl=http%3A%2F%2Ftrack.familyfeatures.com%2F17763%2F10236&amp;dt=STACKING-HEALTHY-HABITS-FOR-PROGRESS-NOT-PERFECTION" />
    <script src="https://erp.featureimpact.com/api/v1/tracking/17763/10236/track.js"></script>
    <script type="text/javascript">
        (function () {
            var image = new Image(1, 1);
            image.src = 'https://erp.featureimpact.com/api/v1/tracking/17763/10236/track.gif?referrer=' + window.location.href;
            image.id = 'feature-impact-content-tracking-pixel';
            image.style.position = 'absolute';
            image.style.top = 0;
            image.style.left = 0;
            document.body.appendChild(image);
        })();
    </script>

SOURCE:

American Heart Association


Discover more from Daily News

Subscribe to get the latest posts sent to your email.

Continue Reading

Lifestyle

Building a Birdhouse: A Step-by-Step DIY Process

Published

on

Building a Birdhouse: A Step-by-Step DIY Process

(Feature Impact) To add charm to your yard, encourage local wildlife and give you a front-row seat to nature, building a birdhouse is a simple weekend project that checks all of those boxes.

Building a Birdhouse

Seasoned DIYers and first-timers alike can follow this step-by-step guide to create a functional, welcoming birdhouse.

Step 1: Choose the Right Design
Start by deciding what type of birds you’d like to attract. Different birds prefer different house sizes and entrance types. A simple, classic birdhouse design makes the project beginner-friendly and works well for common backyard birds like wrens, chickadees and bluebirds. In general, plan for at least a 1-1 2/2-inch entrance hole, a 5-by-5-inch interior space and 2 inches or more of roof overhang.

Step 2: Gather Materials and Tools
Most DIY birdhouses can be built with basic materials and tools you may already have at home, including untreated cedar or pine wood, screws or nails, wood glue, sandpaper and exterior-safe paint as well as a measuring tape, pencil, saw and drill.

Step 3: Measure and Cut Wood
Measure and cut wood to make the front panel, back panel, two side panels, floor and roof. Then sand all edges for smooth assembly.

Step 4: Drill Holes
Using a hole-saw bit, drill the entrance hole into the front panel. Position it a few inches below the roofline to keep predators out. Next, drill 2-3 small drainage holes in the floor piece to prevent water buildup and help keep the birdhouse dry.

Step 5: Assemble the Birdhouse
Attach the side panels to the back panel using screws or nails. Add the front panel then secure the floor piece, slightly recessed, so rainwater can drain. Attach the roof last, making sure it slopes slightly to allow water to run off.

Step 6: Paint the Exterior
If you plan to paint your birdhouse, stick to neutral, nature-inspired colors. Light browns, soft greens or white help regulate temperature and blend into the environment.

Step 7: Mount Your Birdhouse
Once dry, place your birdhouse in a quiet, sheltered spot away from heavy foot traffic. Mount or hang it 5-10 feet off the ground, facing away from prevailing winds.

Visit eLivingtoday.com for more DIY project inspiration.

Photo courtesy of Shutterstock

Advertisement
Get More From A Face Cleanser And Spa-like Massage

SOURCE:

collect?v=1&tid=UA 482330 7&cid=1955551e 1975 5e52 0cdb 8516071094cd&sc=start&t=pageview&dl=http%3A%2F%2Ftrack.familyfeatures
track

eLivingtoday.com

Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.


Discover more from Daily News

Subscribe to get the latest posts sent to your email.

Continue Reading

health and wellness

Study Links Agent Orange Exposure to Higher Risk of Rare Melanoma

A study revealed that U.S. veterans exposed to Agent Orange are at increased risk of developing acral melanoma, a rare skin cancer located in areas not typically exposed to sunlight. With higher odds of diagnosis and poorer prognosis, early detection in veterans is vital for effective treatment and improved outcomes.

Published

on

Study Links Agent Orange Exposure to Higher Risk of Rare Melanoma

(Feature Impact) A new study found U.S. veterans exposed to Agent Orange face a higher risk of developing a rare and often overlooked form of melanoma that appears on the hands and feet, and under the nails.

Researchers reported in “JAMA Dermatology that veterans with documented exposure to the herbicide had significantly higher odds of developing acral melanoma, a subtype of skin cancer that forms on the palms, soles and nail beds.

Unlike most melanomas, which are associated with ultraviolet radiation, acral melanoma develops in areas not typically exposed to the sun. It can resemble a bruise under a toenail or a dark patch on the bottom of a foot – locations that are easily missed and not commonly associated with skin cancer.

Because of its unusual appearance and location, acral melanoma is often diagnosed at later stages, when treatment is more difficult and survival rates are lower.

The researchers analyzed 20 years of Veterans Health Administration data, comparing more than 1,200 veterans diagnosed with acral melanoma with more than 5,000 veterans without melanoma. Veterans exposed to Agent Orange had about 30% higher odds of developing the disease.

The findings suggest Agent Orange may be an underrecognized risk factor for acral melanoma, particularly for veterans who may not view themselves as at risk for skin cancer because of limited sun exposure or darker skin tones.

“Identifying exposures that may increase risk can help inform earlier recognition and, ultimately, earlier diagnosis when treatment is most effective,” said Marc Hurlbert, chief executive officer of the Melanoma Research Alliance and a principal investigator on the study.

Senior author Dr. Rebecca I. Hartman of Brigham and Women’s Hospital said acral melanoma behaves differently from other melanomas and often responds less well to current therapies.

“Acral melanoma has a poorer prognosis than the more common cutaneous melanoma because it is often diagnosed at later stages,” Hartman said. “Identifying risk factors is critical to improving detection and outcomes.”

Agent Orange was used extensively during the Vietnam War and exposure has been linked to several cancers and chronic illnesses. These findings add to evidence the herbicide may also affect the skin in ways not reflected in traditional melanoma awareness efforts.

Acral melanoma has also been associated with sex, race and ethnicity, and prior skin lesions. Researchers said the study supports treating the disease as distinct from sun-driven melanomas that dominate public education campaigns.

Advertisement
Get More From A Face Cleanser And Spa-like Massage

For veterans, the research highlights the importance of examining less visible areas of the body, including the bottoms of the feet, between the toes and under the nails. Changes in nail color, dark streaks or unexplained spots on the palms or soles should be evaluated by a health care provider, especially for those with known Agent Orange exposure.

Researchers said the findings could help guide future screening strategies for higher-risk populations and encourage further study of why acral melanoma differs biologically from other skin cancers.

Find more information at curemelanoma.org.

Photo courtesy of Shutterstock

collect?v=1&tid=UA 482330 7&cid=1955551e 1975 5e52 0cdb 8516071094cd&sc=start&t=pageview&dl=http%3A%2F%2Ftrack.familyfeatures

    

SOURCE:

Melanoma Research Alliance

Our Lifestyle section on STM Daily News is a hub of inspiration and practical information, offering a range of articles that touch on various aspects of daily life. From tips on family finances to guides for maintaining health and wellness, we strive to empower our readers with knowledge and resources to enhance their lifestyles. Whether you’re seeking outdoor activity ideas, fashion trends, or travel recommendations, our lifestyle section has got you covered. Visit us today at https://stmdailynews.com/category/lifestyle/ and embark on a journey of discovery and self-improvement.


Discover more from Daily News

Subscribe to get the latest posts sent to your email.

Continue Reading

Trending