Health
Sleep deprivation dangers: How pulling an all-nighter affects your physical and mental health
Most people have sacrificed sleep at some point, but those extra waking hours could come at a price.
While it can be tempting to burn the midnight oil — whether it’s to get some work done, knock out a home project or care for a loved one — forgoing rest can wreak havoc on your health.
Fox News Digital spoke to experts about the short- and long-term effects of pulling an all-nighter — and how to rebound after a period of missed sleep.
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Here’s a deep dive.
What does staying up all night do to the body?
Pulling an all-nighter can have several impacts on the body, both physically and mentally, according to Dr. Leah Joseph, a primary care physician with New York-based Teladoc Health.
Pulling an all-nighter can have several impacts on the body, both physically and mentally, doctors warned. (iStock)
“The physical effects include weakening your immune system, which makes you more susceptible to illnesses,” she told Fox News Digital.
“Your body may also release a higher level of cortisol, which leads to elevated stress levels.”
In addition, sleep deprivation can result in impaired memory, concentration and overall cognitive function, Joseph noted.
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“The mental effects include mood changes, which can contribute to irritability, anxiety or depression,” she said.
“It also affects your decision-making, as your judgment may be negatively affected.”
Alex Dimitriu, M.D., who is double board-certified in psychiatry and sleep medicine and is founder of Menlo Park Psychiatry & Sleep Medicine in California, also warned of adverse effects.
“Even a single night of insufficient sleep leads to a buildup of toxins in the brain similar to those seen in people with Alzheimer’s disease.”
“There is evidence that even a single night of insufficient — or worse yet, absent — sleep leads to a buildup of toxins in the brain similar to those seen in people with Alzheimer’s disease,” he told Fox News Digital.
“Similar to Alzheimer’s, even one night of lost sleep can cause fatigue, impaired impulse control, mood instability, diminished attention and memory — all symptoms similar to ADHD.”
Staying up all night can significantly disrupt your sleep schedule and circadian rhythm, a doctor warned. (iStock)
“Underslept” people are more likely to suffer from a variety of psychiatric conditions, Dimitriu said.
Those include depression, anxiety, substance use, memory impairment and possibly an eventual increased risk of dementia.
“The brain needs sleep to clean up and reset,” he said.
Physically, lost sleep causes increased carb craving, diminished immunity and increased stress hormones, such as cortisol and adrenaline, he added.
“The brain needs sleep to clean up and reset.”
“The increased stress hormones, in turn, can elevate heart rate, blood pressure and blood sugar.”
Is an occasional all-nighter safe?
While pulling an occasional all-nighter may include include fatigue, irritability, impaired cognitive function and a temporary disruption of the sleep-wake cycle, Joseph said it may not cause significant long-term damage on its own.
Consistently skipping sleep over an extended period can lead to chronic sleep deprivation, which can have severe consequences over time. (iStock)
“Occasional all-nighters may not cause significant long-term damage if followed by sufficient recovery sleep,” she said. “The human body is resilient and can generally recover from short-term sleep deprivation.”
Consistently skipping sleep over an extended period can lead to chronic sleep deprivation, however, which can have more severe consequences over time.
Those impacts can include an increased risk of cardiovascular disease, diabetes, obesity, impaired immune function and mental health issues, Joseph said.
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Sleep deprivation will affect different people in different ways, she noted, as individual factors and resilience play a role.
“An all-nighter never killed anyone,” Dimitriu agreed. “However, they add up, and you will still feel miserable after a night of no sleep, and will not perform at your best.”
The physical effects of all-nighters include weakening of the immune system, which makes people more susceptible to illness. (iStock)
What to do after an all-nighter
Staying up all night can significantly disrupt your sleep schedule and circadian rhythm, Joseph said.
“The circadian rhythm is a natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours,” the doctor said.
“When you stay up all night, you throw off this cycle, leading to several potential effects on your sleep schedule.”
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After pulling an all-nighter, it may take some time for the body to readjust, and this can lead to temporary insomnia or difficulties falling asleep at the usual time, according to Joseph.
“Some potential effects that someone can suffer from include delayed sleep onset, irregular sleep patterns, increased sleep debt and difficulty regaining normalcy,” she said.
Exposure to morning sunlight can help regulate the circadian rhythm and get back to a regular sleep schedule, experts say. (iStock)
To mitigate the impact on your sleep schedule, prioritize getting back on track as soon as possible, said Joseph.
Some strategies include shifting to an earlier bedtime, spending time outdoors during daylight hours to help regulate your circadian rhythm, and establishing a consistent sleep routine by going to bed and waking up at the same time each day, according to Joseph.
“Personally, I also like to limit caffeine close to bedtime and stay hydrated,” she said. “If I do need a nap, I limit it to 20 to 30 minutes.”
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Dimitriu also recommended getting some sunlight exposure in the morning to reset your rhythm.
“Morning light is really important to getting you to bed at night,” he said.
Getting outdoor physical activity during the day, eating a light dinner and going to bed a little earlier than usual can also help regulate sleep cycles, the doctor advised.
“Prioritizing regular, sufficient sleep is essential for your overall well-being,” a doctor advised. (iStock)
Both experts agreed that the best strategy is to plan for healthy sleep and avoid all-nighters.
“Your performance after a night of not sleeping can be markedly diminished,” Dimitiu said. “All-nighters are often the result of poor planning, so try to plan ahead and avoid nights of lost sleep.”
Joseph added, “While occasional all-nighters may not have severe long-term consequences, making them a habit can contribute to health issues over time.”
“Prioritizing regular, sufficient sleep is essential for your overall well-being.”
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Health
Always running late? The real cost to your relationships may surprise you
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Chronic lateness is known to be a common annoyance, often leading to strain within relationships, experts have confirmed.
And for some people who struggle to be on time, the reasons may go far beyond poor planning.
Psychotherapist and author Jonathan Alpert told Fox News Digital that chronic lateness often stems from a combination of psychological patterns and neurobiological factors that people may not realize are influencing them.
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“For some people, it’s personality-driven. They’re distractible, optimistic about how long things take, or simply not tuned into the impact on others,” the New York-based expert said.
For others, the issue stems from neurobiological differences that affect how the brain manages time.
Chronic lateness may not stem from poor planning, but from psychological and neurobiological factors. (iStock)
That can make it harder to estimate how long tasks take or to transition from one activity to the next, leading to chronic lateness, according to Alpert.
Impact on relationships
In addition to disrupting schedules, chronic lateness may also strain relationships and create tension.
“Lateness erodes trust. Over time, it sends the message that someone else’s time is less important, even if that’s not the intent,” Alpert noted.
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Lateness can also become an issue in the workplace, where repeated delays can undermine teamwork and harm a person’s reputation.
These patterns are common among people with ADHD, who often experience what is known as “time blindness,” making it difficult to recognize how quickly minutes pass or how long tasks truly take.
“Adding 10 to 15 minutes of buffer between activities reduces the frantic rushing that leads to chronic lateness.”
ADHD is strongly associated with executive-function difficulties, which are the skills needed to stay organized, plan ahead and focus on essential details, according to the Attention Deficit Disorder Association.
When these abilities are weaker, it becomes more challenging to gauge time, follow a schedule and meet deadlines, which can impact personal and professional relationships, experts agree.
Frequent tardiness in a work setting can throw off group efforts and leave others with a negative impression of the employee. (iStock)
Underlying patterns
Anxiety, avoidance and perfectionism are patterns that Alpert most often sees in people who tend to run late, he noted.
“Many chronically late individuals don’t intend to be disrespectful. They’re overwhelmed, anxious or trying to squeeze too much into too little time,” he said.
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These emotional patterns often show up in different ways. For some, anxiety can make it difficult to begin even simple tasks, pushing everything behind schedule before the day has even started, according to Alpert.
For others, the struggle happens in the in-between moments. Shifting from one activity to another can feel surprisingly uncomfortable, so they linger longer than intended and lose time without noticing.
Anxiety is a major factor behind why some people have trouble being on time, according to experts. (iStock)
Others may get caught up in the details, as perfectionism keeps them adjusting or “fixing one more thing” as the minutes slip away, Alpert said.
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Another major factor, the expert shared, is that many people simply misjudge how long tasks take. Their internal sense of time is often inaccurate, which leads them to assume they can fit far more into a day than is realistically possible.
‘Time audit’
Alpert often recommends that his clients perform a simple “time audit,” where they track how long they think a routine task will take and then time it in real life. This can help them rebuild a more accurate internal clock, he said.
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“Adding 10 to 15 minutes of buffer between activities reduces the frantic rushing that leads to chronic lateness,” he said.
Many people with ADHD have a difficult time recognizing how quickly minutes pass or how long tasks truly take. (iStock)
Despite the challenges lateness can create, Alpert said people don’t have to be stuck with these habits forever. With the right support and consistent strategies, meaningful change is possible.
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“Strong routines, alarms, checklists and accurate time estimates compensate for traits that don’t naturally disappear,” he added.
People who find that lateness is affecting their everyday life and relationships may benefit from discussing their concerns with a healthcare provider or mental health professional.
Health
Holiday heart attacks rise as doctors share hidden triggers, prevention tips
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The holidays are known to be a source of stress, between traveling, preparing for family gatherings and indulging in lots of food and drinks.
The uptick of activity can actually put a strain on the heart, a phenomenon known as “holiday heart syndrome.”
Cardiothoracic surgeon Dr. Jeremy London addressed this elevated risk in a recent Instagram post, sharing how heart attacks consistently rise around the holidays.
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“Every year, like clockwork, we see a spike in heart attacks around Christmas and New Year’s,” the South Carolina-based surgeon said. “In fact, Christmas Eve is the highest-risk day of the year.”
This is due to a shift in behavior, specifically drinking and eating too much, moving less and being stressed out, according to London. “Emotional stress, financial stress, the increased pace of the holidays, increased obligations,” he listed.
Cold weather also causes vasoconstriction (narrowing of blood vessels), according to London, which increases the risk of plaque rupture and the potential for heart attack.
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Dr. Glenn Hirsch, chief of the division of cardiology at National Jewish Health in New York, noted in an interview with Fox News Digital that holiday heart syndrome typically refers to the onset of an abnormal heart rhythm, or atrial fibrillation.
This can happen after an episode of binge-drinking alcohol, Hirsch said, which can be exacerbated by holiday celebrations.
Binge-drinking at any time can drive atrial fibrillation, a cardiologist cautioned. (iStock)
“It’s often a combination of overdoing the alcohol intake along with high salt intake and large meals that can trigger it,” he said. “Adding travel, stress and less sleep, and it lowers the threshold to go into that rhythm.”
The biggest risk related to atrial fibrillation, according to Hirsch, is stroke and other complications from blood clots. Untreated atrial fibrillation can lead to heart failure after a long period of time.
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“The risk of atrial fibrillation increases with age, but also underlying cardiovascular disease risk factors increase the risk, such as high blood pressure, obesity, diabetes, sleep apnea and chronic kidney disease,” he added.
Christmas Eve is the “highest risk day of the year” for heart attacks, according to one cardiologist. (iStock)
Preventing a holiday heart event
Holiday heart syndrome is preventable, as Hirsch reminds people that “moderation is key” when celebrating.
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The expert recommends avoiding binge-drinking, overeating (especially salty foods) and dehydration, while managing stress levels and prioritizing adequate sleep.
“Don’t forget to exercise,” he added. “Even getting in at least 5,000 to 10,000 steps during the holiday can help lower risk, [while] also burning some of the additional calories we are often consuming around the holidays.”
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London agreed, stating in his video that “movement is medicine” and encouraging people to get out and move every day.
The various stresses of the holidays can have physical consequences on the body, doctors warn. (iStock)
It’s also important to stay on schedule with any prescribed medications, London emphasized. He encourages setting reminder alerts, even during the holiday break.
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“Prioritize sleep and mindfulness,” he added. “Take care of yourself during this stressful time.”
London also warned that many people delay having certain health concerns checked out until after the holidays, further worsening these conditions.
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“Don’t ignore your symptoms,” he advised. “If you don’t feel right, respond.”
Health
‘Aggressive’ new flu variant sweeps globe as doctors warn of severe symptoms
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Flu season is among us, and a new strain has emerged as a major threat.
Influenza A H3N2, or the subclade K variant, has been detected as the culprit in rising global cases, including in the U.S.
In an interview with Fox News Digital, Dr. Neil Maniar, professor of public health practice at Boston’s Northeastern University, shared details on the early severity of this emerging strain.
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“It’s becoming evident that this is a pretty severe variant of the flu,” he said. “Certainly in other parts of the world where this variant has been prevalent, it’s caused some severe illness, and we’re seeing an aggressive flu season already.”
Influenza A H3N2, or the subclade K variant, has been detected as the culprit in rising global cases. (iStock)
The variant seems to differ from prior strains of the flu, with heightened versions of typical symptoms like fever, chills, headache, fatigue, cough, sore throat and runny nose.
Subclade K is the “perfect storm” for an aggressive flu season, Maniar suggested, as vaccination rates overall are down and this year’s flu vaccine does not address this specific strain.
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“The vaccine is very important to get, but because it’s not perfectly aligned with this variant, I think that’s also contributing to some degree to the severity of cases we’re seeing,” he said. “We’re going in [to this flu season] with lower vaccination rates and a variant that in itself seems to be more aggressive.”
“There’s a lot of concern that this could be a particularly difficult flu season, both in terms of the total number of cases [and] the severity of those cases.”
Staying indoors during the colder months increases the risk of exposure to winter illness. (iStock)
Because subclade K is “quite different” from prior variants, Maniar said there is less natural immunity at the community level, further increasing the risk of spread and severity.
Those who are unvaccinated are also at risk of experiencing more severe symptoms, as well as a higher risk of hospitalization, the doctor emphasized.
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In addition to getting vaccinated, the doctor recommends washing hands frequently and properly. While the flu can spread via airborne transmission, a variety of other illnesses, like norovirus, can stick to surfaces for up to two weeks, he added.
The holiday season also boosts the risk of infection, as gatherings, large events, and packed planes, trains and buses can expose people to others who are sick.
The flu vaccine can help to prevent hospitalization and reduce severe symptoms, doctors agree. (iStock)
Those who are not feeling well or exhibiting symptoms should “please stay home,” Maniar advised — “especially if you think you are in that contagious period of the flu or any of these other illnesses that we’re seeing … whether it’s norovirus or COVID or RSV.”
“If you’re not feeling well, stay home. That’s a great way to recover faster and to ensure that you’re not going to get others around you sick.”
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For those who are unsure of their health status or diagnosis, Maniar recommends seeing a healthcare provider to get tested. Some providers may be able to prescribe medication to reduce the severity and duration of the illness.
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“It’s important that everyone stays vigilant and tries to take care of themselves and their families,” he added.
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