Irregular Sleep, Drinking Caffeine After 3PM Could Raise Your Risk Of Heart Attack And Stroke

Updated Dec 1, 2024 | 03:01 PM IST

SummaryConsistency in sleep is more crucial for heart health than simply sleeping enough hours.
Irregular Sleep, Drinking Caffeine After 3PM Could Raise Your Risk Of Heart Attack And Stroke

Irregular Sleep, Drinking Caffeine After 3PM Could Raise Your Risk Of Heart Attack And Stroke

I’ve always struggled with inconsistent sleep, staying up late and waking up at different times each day. My love for coffee was also on an all-time high with trying all the season specials. But it is only recently, I learned how this irregular sleep pattern and caffeine could increase my risk of heart attack and stroke. Now, I’m prioritizing a consistent sleep schedule and cutting out caffeine after 3 PM to protect my heart.

A new, shocking study shows that irregular sleep patterns can greatly increase the risk of heart attack and stroke. But that's not all: the timing of your caffeine intake could also play a critical role in your cardiovascular health. If you are struggling with inconsistent sleep patterns and regularly sipping on caffeinated beverages late in the day, you may be unknowingly putting yourself at risk for serious heart-related issues.

For most people, sleep is something of a given and we often only consider ourselves as long as we get our required seven to nine hours. However, according to a recent study conducted by researchers at the Children's Hospital of Eastern Ontario, it may not be that long after all. The study, which included more than 72,000 participants, found that people with irregular sleep patterns—those who fall asleep and wake up at vastly different times each day—face a 26% higher risk of experiencing a heart attack or stroke. This increased risk persisted even for those who managed to get enough sleep. The study followed up participants for eight years to track heart events such as heart attacks, strokes, and heart failure. The conclusions were clear: irregular sleep, even if it's sufficient in duration, is a major cardiovascular risk factor.

The researchers found that those whose sleep patterns were highly irregular had a significantly greater chance of life-threatening heart issues. The more erratic your sleep schedule, the greater the risk, regardless of how many hours you sleep. In fact, people with irregular sleep schedules showed worse cardiovascular health outcomes, including higher rates of high blood pressure, elevated stress hormones, and poor blood sugar and cholesterol management.

Senior scientist Dr. Jean-Philippe Chaput said "sleep regularity may be more relevant than sufficient sleep duration in modulating MACE [major adverse cardiovascular event] risk." In the study, it shows that our bodies are comfortable with consistency, and a varied sleep schedule may interfere with other processes that keep us healthy, especially the heart.

Is it Caffeine After 3 PM Causing Sleeplessness?

Another daily habit that may be putting your heart at risk is caffeine consumption after 3 PM. According to Dr. Chaput, the experts emphasize the need for a healthy sleep schedule and avoiding caffeine late in the day. Caffeine can stay in your blood for up to eight hours, and its consumption later in the afternoon can disrupt your sleep cycle.

Consistent, good-quality sleep is necessary for maintaining healthy cardiovascular function, and the disruption of this by late-day caffeine intake exacerbates the risks posed by irregular sleep. When you drink coffee, tea, or other caffeinated beverages too late, the stimulant effect on your nervous system makes it harder to fall asleep at a regular time. This can lead to inconsistent sleep patterns, which, as we have seen, can be harmful to heart health.

Dr Chaput insists that humans need to adopt practices that contribute to regularized sleep habits. This can be attained by establishing a proper sleeping and waking schedule, eliminating afternoon intake of stimulants such as caffeine, and making your body clock coincide with the lifestyle one leads.

How Does Poor Sleep Affect Heart Health?

According to the experts, the disturbance due to irregular sleep patterns impacts more than one physiological process involved in the maintenance of the healthy heart. For example, poor sleep can be associated with increased inflammation of the body, weakened immunity, and altered regulation of blood sugar and cholesterol, all of which contribute to increased blood pressure and weakening endothelial function, both associated with an increased risk for cardiovascular diseases. Sleep also plays a very important role in regulating stress hormones. Poor or disturbed sleep results in increased levels of cortisol, the stress hormone, which increases blood pressure and can have negative impacts on cardiovascular health over time.

Scientists hypothesize that these disturbances trigger a series of negative effects that enhance the risk of developing chronic heart conditions, including hypertension, atherosclerosis, or even heart failure.

Tips to Protect Your Heart and Improve Your Sleep

In order to protect your heart, experts recommend several proactive measures to improve your sleep patterns and lifestyle. First, maintain a regular sleep schedule whereby you go to bed and wake up at the same time every day, including weekends. Consistency will keep your body's internal clock in check.

Along with regulating your sleep, paying attention to your caffeine habits is just as important. To reduce your risk of heart disease and stroke, experts suggest avoiding caffeine after 3 PM. If you’re sensitive to caffeine, this rule becomes even more critical.

In addition, the introduction of stress-reducing activities like yoga or mindfulness can also be beneficial to lower cortisol levels, and therefore both sleep and heart health can improve. A diet rich in antioxidants, healthy fats, and low on processed sugars also helps maintain cholesterol levels and reduce inflammation.

Does Your Sleep Environment Also Has A Role To Play

Apart from the timing of caffeine and your sleep schedule, another very overlooked factor is the quality of your sleep environment. Scientists have long known that the environment in which you sleep has a huge impact on the quality of your rest. Poor quality of sleep, even if your sleep schedule is regular, can cause health risks that are very much the same as those that arise from irregular sleep patterns.

Here’s an additional tip: make sure your bedroom is conducive to restful sleep. This means keeping your room dark, quiet, and cool. A temperature of around 65°F (18°C) is ideal for most people. Consider investing in a comfortable mattress and pillows, and avoid screen time at least 30 minutes before bed to allow your brain to unwind.

Irregular sleep, in association with taking caffeine in late parts of the day, can risk heart attack and stroke, but a simple maintenance of a sleep schedule, the reduction of consumption of afternoon caffeine, and sleep environmental awareness can definitely safeguard one's heart along with total health.

Your sleep is more than just a time for rest; it's a vital component of your long-term health, and maintaining consistency in your sleep habits is one of the best things you can do for your heart.

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One In Two Children Globally Exposed To Multiple Climate Hazards: UNICEF

Updated Jun 16, 2026 | 03:12 PM IST

SummaryThe Children’s Climate Risk Report 2026 revealed that children around the globe are facing increasing threats from heatwaves, storms, floods and droughts, with more than one billion facing at least three of these at once.
One In Two Children Globally Exposed To Multiple Climate Hazards: UNICEF

Credit: UNICEF

One in two children, or half of the world's children, are exposed to multiple overlapping climate hazards that threaten their health, education, and survival, according to a new report released by UNICEF today.

As the climate crisis worsens, children around the globe are facing increasing threats from heatwaves, storms, floods, and droughts, with more than one billion exposed to at least three of these hazards simultaneously, stated the Children's Climate Risk Report 2026.

“The lives of children continue to be upended by the impact of heatwaves, wildfires, droughts and floods,” said Catherine Russell, Executive Director of UNICEF.

“Half of the world’s children are now living with at least three overlapping climate threats shaping their daily lives.”

Children Facing Multiple Climate Risks

Also read: 3 Infants Hospitalized In US Botulism Outbreak Tied To Powdered Formula

The report highlights the unprecedented scale at which children are being exposed to multiple climate hazards. These include:

Floods: Nearly one in seven children—around 337 million—live in areas affected by riverine flooding, while 33 million are exposed to coastal flooding.

Drought: More than three-quarters of all children globally (1.8 billion) are exposed to agricultural or meteorological droughts, threatening food security, nutrition, and livelihoods.

Tropical Storms: Around 662 million children live in areas exposed to tropical storms, where intense rainfall and high winds disrupt homes, schools, and health services.

One In Two Children Globally Exposed To Multiple Climate Hazards: UNICEF

Heatwaves and Extreme Heat: Nearly two in three children worldwide (1.5 billion) are exposed to heatwaves that are becoming more frequent, longer-lasting, or more severe. Additionally, 1.2 billion children are exposed to extreme heat conditions.

Fires and Dust Storms: An estimated 206 million children are exposed to frequent and severe wildfires, while 123 million are exposed to sand and dust storms.

Malaria: More than two in five children globally—around one billion—live in areas with exposure to malaria, a climate-sensitive disease whose transmission is influenced by temperature and rainfall patterns.

Air Pollution: An estimated 2.3 billion children—almost all children worldwide—live in areas where air pollutants are detectable.

“These exposures pose serious risks to children’s health, learning and well-being, particularly where access to cooling, safe water and health care is limited,” the report noted.

One In Two Children Globally Exposed To Multiple Climate Hazards: UNICEF

UNICEF Calls for Urgent Action

To protect children's rights from climate threats and help communities adapt to growing environmental challenges, UNICEF is urging governments, businesses, and other stakeholders to take immediate action.

Read More: 3 Infants Hospitalized In US Botulism Outbreak Tied To Powdered Formula

The agency called for:

  • Reducing emissions and fulfilling existing international climate commitments based on the best available science.
  • Protecting children through inclusive climate adaptation, disaster risk reduction, and responses to loss and damage, while ensuring child-focused services are incorporated into national adaptation and disaster preparedness plans.
  • Empowering children and young people to participate meaningfully in climate action through investments in climate education, knowledge, and skills, while safeguarding their rights to expression and participation in decisions that affect their lives.
“This analysis can help governments and decision makers plan better and invest more effectively in resilient services,” Russell said.

“When we strengthen health and education systems and improve infrastructure with children in mind, we protect them from today’s climate threats and help secure their future.”

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Gym, Work, Daily Strain: Are Modern Lifestyles Increasing the Risk of Hernias?

Updated Jun 16, 2026 | 01:00 PM IST

SummaryWhen repair is advised, modern hernia surgery is safe, highly effective, and tailored to the individual.
Hernia (1)

Surgery is the only definitive treatment for hernia. (Photo credit: iStock)

June is observed worldwide as Hernia Awareness Month—a timely reminder that this common condition is widely misunderstood, often ignored, and yet highly treatable when addressed early. It is a fitting moment to look at how the way we live, work, and exercise today may be quietly shaping our risk.

What is a hernia?

Prof. (Dr.) Ashvind Bawa, MS, FACS — Director, The Hernia Institute at Bawa Hospital, Ludhiana, said, "A hernia develops when an organ or fatty tissue protrudes through a weakened area of muscle or connective tissue, most commonly in the abdomen or groin. Although hernias are popularly blamed on heavy lifting alone, the reality is more nuanced. Several features of modern life can quietly raise a person’s risk. As fitness culture grows, high-intensity gym workouts performed with poor technique or excessive loads can cause sudden spikes in intra-abdominal pressure. Importantly, exercise itself does not create a hernia in healthy tissue; rather, repeated, poorly controlled strain may unmask or accelerate weakness at vulnerable points of the abdominal wall, such as the groin, the navel, or the site of a previous surgical scar."

Is obesity contributing to hernia risk?

Obesity, increasingly common in urban populations owing to sedentary routines and energy-dense diets, places sustained pressure on the abdominal wall and is one of the most consistently documented risk factors for both primary and recurrent hernias. Chronic cough — frequently related to smoking, asthma, or other respiratory conditions — transmits repetitive pressure through the abdomen, as does chronic constipation with persistent straining during bowel movements. In men, an enlarged prostate causing straining to pass urine acts in a similar way. Each of these contributes to the cumulative load that a weakened abdominal wall must withstand.

Read more: Can Extreme Heat Trigger Heart Palpitations? Expert Explains Risks

Modern work patterns matter too. Occupations involving repetitive lifting, pushing, or pulling place recurring demands on the abdominal wall, while prolonged sitting in desk-based roles contributes indirectly by promoting weight gain, deconditioning of the core musculature, and reduced overall fitness. It is worth emphasising that these factors do not guarantee that a hernia will form; rather, they raise the probability in individuals who are already predisposed—whether through a family history of hernia, increasing age, a collagen or connective-tissue disorder, or a prior abdominal incision.

Lifestyle changes to reduce hernia risk

First and foremost, maintain a healthy weight. Excess weight increases the mechanical load on the abdominal wall and predisposes it to weakness. A balanced diet built around fresh fruit and vegetables, whole grains, and adequate lean protein supports not only muscle integrity but also overall metabolic health. Stopping smoking is equally important: beyond reducing chronic cough, smoking impairs collagen and tissue healing, which is directly relevant to wound and hernia repair.

Avoiding constipation and the straining that accompanies it helps minimise spikes in abdominal pressure, which makes adequate hydration and a fibre-rich diet meaningful components of risk reduction. Alongside dietary choices, the right type of exercise is key. Regular, moderate activity such as brisk walking, cycling, or swimming helps with weight control while improving cardiovascular fitness and muscular endurance. Gradual, progressive core strengthening—planks, bridges, and controlled abdominal work—can support the abdominal wall, but technique and progression matter far more than intensity. Avoid crash diets and abrupt, very high-intensity regimens, which can lead to muscle loss and injury; a sustainable, gradual plan is safer and more effective.

Finally, adopt safe lifting habits. Bend at the knees and use your leg muscles rather than your back; keep the load close to the body; exhale as you lift rather than holding your breath; and avoid twisting under load. These simple measures reduce strain on both the back and the abdominal wall.

Read more: GLP-1 Weight-Loss Drugs May Improve Fertility In Men With Obesity, Study Suggests

When to seek medical attention — and what treatment involves

It is important to be clear that a hernia is a structural defect in the abdominal wall. Once a true hernia has formed, no diet, exercise, belt, or “conservative management” can make it disappear — these measures may control symptoms or slow enlargement, but the defect itself does not close on its own. Surgery is the only definitive treatment. The decision on timing, however, should be individualised: many small, painless, easily reducible hernias can be monitored under a planned ‘watchful waiting’ approach in consultation with a surgeon, while symptomatic, enlarging, or high-risk hernias are best repaired in a planned, elective setting before complications arise.

Some signs mean you should see a doctor the same day because the contents of the hernia—often a loop of bowel—may have become trapped and lost their blood supply, which is an emergency. Watch for a bulge that suddenly becomes hard, painful, or will not push back in; pain that is severe or getting worse; the skin over the swelling turning red or dark; feeling sick or vomiting; a swollen, bloated belly; being unable to pass wind or have a bowel movement; or a fever. If any of these happen, go to the emergency department straight away rather than waiting.

Depending on the type and size of the hernia and the patient’s overall health, repair may be performed as open surgery, by laparoscopy, or with robotic assistance, and most repairs use a mesh to reinforce the abdominal wall and reduce the risk of recurrence. Many procedures are now carried out as day-care surgery, allowing patients to return home the same day and resume normal activities sooner. The aim of contemporary care is not only a durable repair but also a comfortable recovery, with techniques chosen to minimise pain and speed return to work and daily life.

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IVF Expert Answers: The Fertility Health Check Every Aspiring Father Should Consider

Updated Jun 16, 2026 | 11:48 AM IST

SummaryDoctors say that if you are trying to get pregnant and are failing despite repeated attempts, some simple health check-ups can help you evaluate your overall health.
Fertility in men

Doctors say that overall health is closely linked to fertility. (Photo credit: AI generated)

Preparing for parenthood is not just about a woman's health. A simple fertility health check can help men understand their reproductive health, identify potential issues early, and improve their chances of starting a healthy family. Here, the expert tells men about the vital tests they should get done if they want to embrace fatherhood.

In an interview with Health and Me, Dr. Mrunalini Jagne (Ahire), Fertility Consultant and IVF Specialist at Motherhood Fertility & IVF, Kharghar, Navi Mumbai, listed the most important fertility checks for men, and how they can go a long way in improving quality of life.

When couples plan for a baby, most of the focus is often on the mother’s well-being. However, understand that a father's health also plays an equally important role in conception and pregnancy outcomes. Are you aware? Factors such as age, lifestyle habits, medical conditions, stress, and nutrition can affect sperm quality and fertility. So, men who are planning to become fathers should consider a preconception fertility assessment to ensure they are in the best possible health before trying to conceive. Men shouldn’t miss the following fertility checks.

Fertility tests that men must go for

Semen analysis: A semen analysis is usually the first and most important fertility test for men. It helps to assess:

  1. Sperm count (number of sperm)
  2. Sperm movement (motility)
  3. Sperm shape (morphology)
  4. Semen volume

This test helps identify whether there are any issues that could make conception more difficult.

Hormone testing: Hormones play a major role in sperm production. Blood tests may be recommended to check levels of:

  1. Testosterone
  2. Follicle-Stimulating Hormone (FSH)
  3. Luteinising Hormone (LH)
  4. Thyroid hormones

Hormonal imbalances can affect fertility and may require treatment.

Lifestyle check: Many everyday habits can influence sperm health. During a fertility evaluation, doctors may assess:

  1. Smoking and tobacco use
  2. Alcohol consumption
  3. Diet and nutrition
  4. Exercise habits
  5. Stress levels
  6. Sleep quality

Making positive lifestyle changes can help improve fertility.

Medical and family history review: Certain health conditions can affect reproductive health. The expert may ask about:

  1. Diabetes
  2. Thyroid disorders
  3. Previous infections
  4. Varicocele (enlarged veins in the scrotum)
  5. Previous surgeries
  6. Family history of fertility problems

If any problems are detected, the doctor will decide the line of treatment for you.

General health screening: Overall health is closely linked to fertility. Screening for obesity, high blood pressure, vitamin deficiencies, and other health concerns can help improve both fertility and long-term well-being.

Simple tests such as semen analysis, hormone evaluation, lifestyle assessment, and general health screening can improve the chances of a healthy pregnancy and baby. Therefore, men should take these tests without wasting any further time and stay updated regarding their fertility health.

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