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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Is IVF A Painful Process? Fertility Specialists Debunk The Myths On IVF Injections

Updated May 20, 2026 | 04:01 PM IST

SummaryFertility specialists carefully tailor the medication dosage according to a woman’s age, hormone levels, ovarian reserve, and medical history, making the process safer and more comfortable.
Painful IVF

A common myth is that painful IVF injections are administered multiple times a day. (Photo credit: AI generated)

Many couples who consult a fertility specialist are advised to undergo Assisted Reproductive Techniques, such as in vitro fertilisation (IVF). However, there are many myths linked to IVF regarding pain and injections. According to the experts, the procedure is more manageable and less painful than commonly believed. This article helps debunk myths surrounding IVF injections.

Dr. Sneha Sathe, Clinical Director & Fertility Specialist, Nova IVF Fertility, Chembur, Mumbai and Dr. Anuranjita Pallavi, Consultant- Fertility & IVF Specialist, Motherhood Fertility & IVF , Kharghar, Navi Mumbai collectively listed some of the most common myths associated with the stigma surrounding IVF – whether it is painful, complicated, or even worth the financial investment.

Currently, many are opting for IVF, a process where eggs are collected from a woman’s ovaries and fertilised with sperm in a laboratory. The embryo is then transferred into the uterus for conception. Couples may consider IVF for several reasons, such as blocked fallopian tubes, low sperm count, hormonal issues, age-related fertility decline, or unexplained infertility. For many, IVF becomes a go-to option, offering hope and a chance to start a family. However, despite its growing success, IVF is still surrounded by fear, especially when it comes to injections and pain. Social media, hearsay, and lack of awareness often make the process seem more difficult and can prevent couples from exploring it.

The IVF journey is different for each woman. IVF does involve medical procedures, but it is not as painful or overwhelming as people believe. One of the biggest concerns around IVF is the use of injections. These injections are given to stimulate the ovaries to produce multiple eggs. While the idea of daily injections can be intimidating, most are administered using very fine needles and are relatively painless. Patients may feel slight discomfort, similar to a small prick, but it is usually manageable and short-lived.

Common IVF Myths Debunked

  1. Myth: IVF injections cause extreme pain—IVF injections cause minimal discomfort, and women should not worry. Most patients experience mild and easy-to-manage pain, especially with guidance from an expert.
  2. Myth: IVF is a very complicated and stressful process. While IVF consists of multiple steps, doctors guide patients throughout the journey. With proper counselling and support, the process becomes much smoother and less stressful for women.
  3. Myth: IVF guarantees pregnancy in one cycle - IVF increases the chances of pregnancy but may not be successful on the first attempt. Success depends on factors such as age, health, and underlying fertility conditions. So, do not get disheartened if the first cycle fails. The first cycle provides a lot of information, and certain steps can be taken, along with changes made to the next attempt, in order to improve the chances of success.

Understanding the facts and debunking common myths can help reduce anxiety and build confidence in couples.

Couples often hesitate to opt for IVF due to the fear of injections and the assumption that the process will be extremely painful or emotionally exhausting. However, with advancements in fertility care today, IVF has become far more patient-friendly, safe, and comfortable than most people imagine. One of the biggest myths is that IVF injections are administered painfully multiple times throughout the day. In reality, most injections are scheduled and simple to administer, and many couples are even taught how to take them comfortably at home.

Another important aspect people often overlook is that IVF treatment today is highly personalised.

While some women may experience temporary bloating, mild cramps, mood changes, or fatigue due to hormonal medications, these symptoms are usually manageable and closely monitored by the facility team. Most women can continue their daily routine during treatment without any major challenges. Equally important are support, counselling, and clear communication with the fertility team, which help reduce anxiety and build confidence. It is necessary to understand that IVF is a step-by-step guided process designed to give couples hope and a better chance at parenthood. Hence, make sure to consult an expert, clear all doubts, and initiate IVF treatment as soon as possible to achieve the dream of pregnancy.

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AI Enabling Faster And Earlier Cancer Detection In India

Updated May 20, 2026 | 01:00 PM IST

Summary​Use of AI is not without challenges: knowledge of proper tools and applications is critical. Results can not be relied upon blindly, and an expert is very critical of their analysis. Sometimes there may be an improper result that needs to be filtered out.
AI Enabling Faster And Earlier Cancer Detection In India

Credit: AI generated image

Everyone knows that when cancer is detected early, cure rates are far superior, side effects are much less, and treatment expenses are also less.

Diagnosis of cancer depends upon carrying out various tests and then their analysis to reach a conclusion.

How AI Supports Cancer Diagnosis

These tests are radiological, like Chest X-ray, CT scans, MRI, Mammography, etc., and in histopathology, analysis of tissue, be it a small biopsy, large specimen handling, or Frozen Section. AI is empowered with large data to suggest and analyze minute patterns that are difficult for a human mind to comprehend, supported by machine learning.

With the use of AI in the analysis of radiological data, it points out suspicious changes (data is fed into its memory), but they are not very clearly visible to the human eye. Hence, it alerts the radiologist to have a close look at that and enhances accuracy and reduces the chances. It is the radiologist who takes the final call because it has to be correlated with the patient’s clinical findings and other information from other investigations of the patient.

Early detection of breast cancer has received a big boost from the integration of AI in the analysis of mammography data. Similar applications are also used by pathologists when they are examining the tissues because the final diagnosis of cancer can be obtained on histopathology only.

Challenges In The Use Of AI

Use of AI is not without challenges: knowledge of proper tools and applications is critical. Results can not be relied upon blindly, and an expert is very critical of their analysis. Sometimes there may be an improper result that needs to be filtered out.

It's time to accept that AI is present and not the future, and we need to learn, adapt, and use it to the benefit of mankind. India is making great strides in AI, and many startups have also come up that are doing a great job.

The real strength of AI in the care of cancer mainly lies in its ability to support the doctors in making faster, sharper, and more well-informed decisions. It can also reduce delay in diagnostics, improve efficiency of screening, and help in detecting cancers at a stage where outcomes of treatment are much better.

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Extreme Summer Heat, Pollution Can Take A Toll On Your Eyes: Here’s How To Stay Protected

Updated May 20, 2026 | 02:21 PM IST

SummaryThe India Meteorological Department (IMD) has issued an orange alert for Delhi until May 25, cautioning residents about prolonged heatwaves and excessive heat conditions expected over six consecutive days.
Extreme Summer Heat, Pollution Can Take A Toll On Your Eyes: Here’s How To Stay Protected

Credit: AI generated image

Amid rising summer temperatures, along with pollution, eye specialists today warned that the heat and dust can add stress on the eyes, leading to dryness, allergies, infections, and irritation.

Delhi witnessed its first official heatwave day of the month on Tuesday, as scorching sunshine and dry winds pushed temperatures beyond 45°C across several parts of the city.

The India Meteorological Department (IMD) warned that conditions are likely to worsen over the coming days, with temperatures expected to rise to nearly 46°C on May 20.

The weather department has also issued an orange alert for Delhi until May 25, cautioning residents about prolonged heatwaves and excessive heat conditions expected over six consecutive days.

Allergies, Dryness, and Infections Common In Summer

Speaking to HealthandMe, Dr. Bhavatharini M, Senior Consultant Ophthalmologist at Dr. Agarwal's Eye Hospital, said that summer conditions can significantly impact eye health.

“Summer places added stress on the eyes, particularly in cities like New Delhi where heat, dust, and pollution are significant factors,” she said.

Dr. Bhavatharini explained that common concerns during the season include dryness caused by increased tear evaporation while

  • watching screens,
  • allergies triggered by environmental irritants,
  • UV-related damage,
  • infections linked to swimming in poorly maintained pools.
Also read: What Is Favipiravir? COVID-Era Antiviral Now Used In Hantavirus Response In UK

Dr. Kalpana R, Senior Consultant, Ophthalmology at SIMS Hospital, also warned of problems that affect the eyes during this season, such as

  • allergies,
  • dryness,
  • seasonal infections,
  • viral and bacterial infections,
  • swimming pool infections,
  • migraine headaches.

She stressed the importance of maintaining proper hydration and following a balanced, nutritious diet to support eye health during the hotter months.

How To Prevent Eye Health In Scorching Summers

Dr. Bhavatharini advised people to take simple preventive measures, such as wearing UV-protective sunglasses, staying well-hydrated, avoiding rubbing their eyes, and using protective goggles while swimming.

“Persistent redness, irritation, or blurred vision should not be ignored and warrants timely evaluation by your eye specialist,” she added.

Dr. Kalpana further recommended wearing protective eyewear outdoors to shield the eyes from harmful UV rays and glare.

People travelling on bikes should wear helmets with visors to reduce exposure to dust and pollution, while swimmers should use swimming goggles to prevent infections and injuries associated with pool water.

For allergies, she advised people not to rub their eyes even if they experience itching.

“Just as a home remedy, you can use an ice pack over the closed eyelids or splash cold water over the closed eyelids to get some immediate relief,” she told HealthandMe.

Avoid Self-Medication

The experts also warned against self-medication in case of eye infections.

“And for viral infections and bacterial infections, if you feel that you get a sticky discharge and redness, you must immediately go to an ophthalmologist and get it treated. Never use over-the-counter medicines for any of your infections,” Dr. Kalpana said.

She added that people with common cold symptoms should wear masks and avoid touching commonly used surfaces if they have signs of an eye infection, as infections can spread through secretions.

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