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.

The NHS has released a warning for people who take levothyroxine to manage thyroid conditions. With an estimated 33 million prescriptions issued every year across the UK, levothyroxine is among the most frequently prescribed medicines provided by the NHS.

Levothyroxine is mainly used to treat an underactive thyroid, a condition medically known as hypothyroidism. Depending on a patient’s needs and a GP’s assessment, the medicine is usually prescribed either as a tablet or as a liquid taken by mouth.

What Is Levothyroxine?

The NHS website explains that while most adults and children can safely take levothyroxine, there are specific situations where it may not be recommended. These restrictions are based on a person’s medical history and current health conditions.

People Who May Not Be Able to Take Levothyroxine

According to NHS guidance, levothyroxine may not be suitable if any of the following apply:

1. You have a heart condition such as angina, heart disease, or heart failure
2. You have a condition that affects your adrenal glands
3. You have previously suffered a heart attack
4. You have an overactive thyroid that produces excess thyroid hormone, known as thyrotoxicosis
5. You have diabetes
6. You have had an allergic reaction to levothyroxine or another medicine in the past
7. You have high blood pressure
8. Patients are advised to inform their GP or specialist about any of these conditions before starting treatment.

Levothyroxine: Possible Side Effects to Be Aware Of

Levothyroxine can cause a range of side effects, some of which may require urgent medical attention. Common side effects associated with the medication include:

• Flushing or excessive sweating
• Feeling restless, anxious, or overly energetic
• Difficulty sleeping
• Nausea
• Headaches
• Vomiting
• Shaking or trembling
• Diarrhoea
• Muscle cramps

The NHS notes that this is not a complete list, and other side effects may occur. Patients are advised to read the information leaflet included with their medication for full details.

Levothyroxine: When to Seek Medical Help

Although these side effects can be unpleasant, they are usually mild and do not typically require a hospital visit. If symptoms persist or become troublesome, the NHS recommends speaking to a doctor or pharmacist for advice.

However, certain symptoms should not be ignored. If you notice a fast or irregular heartbeat while taking levothyroxine, you should contact a doctor or call NHS 111 as soon as possible.

More serious symptoms require immediate action. Anyone experiencing chest pain while on levothyroxine is advised to call 999 without delay, as this could signal a medical emergency.

Disclaimer: This article is for general information only and is not a substitute for medical advice. Levothyroxine should be taken only as prescribed by a qualified healthcare professional. Do not start, stop, or change your medication without consulting your doctor. If you experience severe symptoms or a medical emergency, seek immediate medical attention or call emergency services.

Delhi, on Wednesday morning, woke up to 'very poor' air. The visibility was low and, in fact, the India Meteorological Department (IMD) issued an orange alert for dense fog between 8.30am and 10am. Visibility remained low, and as per the 24-hour average Air Quality Index, Delhi stood at 384, as confirmed by the data from the Central Pollution Control Board (CPCB). In certain areas, including Anand Vihar, AQI remained under 'severe' level, at 452.

This has resulted in cancellation of t least 148 flights and over 150 flights were delayed at the Delhi airport.

However, there may be a silver lining, in an interview with TOI, Tarun Kumar Pithode, who took charge as the new full-time member secretary of the Commission for Air Quality Management (CAQM) said that Delhi can expect "more blue-sky days over next 3-4 years".

How Does The Commission for Air Quality Management Plan To Bring Delhi's Pollution Down?

Delhi’s fight against air pollution is set to intensify over the next few years, with the CAQM outlining a multi-pronged plan aimed at delivering “more blue-sky days” for the capital. Rather than relying on emergency measures alone, the strategy focuses on long-term, structural fixes across transport, industry, energy and regional coordination.

Cutting Emissions at the Source

One of CAQM’s core priorities is reducing pollution from vehicles, which remain a major contributor to Delhi’s poor air quality. The plan pushes for faster adoption of electric vehicles, tighter checks on polluting commercial vehicles, and a stronger public transport network. Scrapping old, high-emission vehicles and discouraging diesel use through stricter enforcement are seen as key steps to curb everyday emissions, not just during winter spikes.

Cleaning Up Industry and Power Generation

Industrial pollution is another major target. CAQM has stressed a shift away from coal and other dirty fuels toward cleaner energy sources. Industries operating in and around Delhi are being pushed to adopt cleaner fuels such as natural gas, along with better emission-control technologies. Power plants in the region are also under scrutiny, with stricter norms to ensure they do not become pollution hotspots during peak winter months.

Tackling Dust and Construction Pollution

Construction dust and road dust significantly worsen Delhi’s air quality, especially during dry months. CAQM’s plan includes stricter enforcement of dust-control norms at construction sites, better mechanised road sweeping, and regular water sprinkling on major roads. Authorities are also being asked to improve urban planning to reduce exposed soil and unpaved areas that contribute to dust pollution.

Managing Seasonal Pollution and Stubble Burning

A major part of Delhi’s pollution problem comes from outside the city, particularly crop residue burning in neighboring states. CAQM has emphasized regional coordination, working with states like Punjab, Haryana and Uttar Pradesh to reduce stubble burning. This includes promoting alternative methods for crop residue management, providing financial incentives, and ensuring accountability when violations occur.

Data-Driven and Year-Round Action

Unlike earlier approaches that focused largely on winter emergencies, CAQM’s plan relies on year-round monitoring and data-driven action. Expanded air-quality monitoring, better forecasting, and early interventions are expected to prevent pollution levels from spiralling out of control. The aim is to move from reactive crisis management to consistent prevention.

A Long Road Ahead

CAQM officials acknowledge that Delhi’s pollution problem will not disappear overnight. However, with coordinated action across sectors and states, they believe the capital can see steady improvement over the next three to four years. The promise of more blue-sky days hinges not just on policy, but on strict enforcement and sustained public cooperation.

"There is a big mistake you are making when you fly and no one talks about how to prevent it," writes Dr Rema Malik, a board-certified vascular surgeon, based in Houston, Texas. On her Instagram post she talks about how our body deals with much of a serious challenge once we enter the plane and the cabin doors shut. She points out that while most of us are busy settling into our seats, our veins enter a risky environment that could raise the chance of developing a blood clot. These risks include deep vein thrombosis or DVT. She points out that this risk is not just limited to older adults, but to people with known health issues too.

What Really Happens to Your Body Mid-Flight

Dr. Malik explains that air travel creates what she calls a “three-hit combo” that puts your circulation under stress.

First is prolonged sitting. When you stay seated for hours, your calf muscles, often called your second heart, stop doing their job. These muscles help push blood back up toward the heart. Without movement, blood begins to pool in the legs instead of flowing upward.

Second comes dehydration. Cabin air is extremely dry, far drier than most natural environments. This causes your body to lose moisture faster than you realize. As dehydration sets in, your blood becomes thicker and more sluggish, which makes clot formation easier.

The third factor is cabin pressure. Lower pressure at cruising altitude causes veins to dilate or expand. This stretching weakens the tiny valves inside your veins that normally prevent blood from flowing backward. Gravity then does the rest, encouraging blood to settle in the lower limbs.

This combination is not about discomfort. It is about safety.

Read: Not Boarded Any Flight And Still Monday Feels Like A Jetlag? You Are Not Alone

Why Age Is Not the Only Risk Factor

There is a common belief that blood clots only affect the elderly or people with chronic illnesses. Dr. Malik strongly disagrees. Whether you are 25 or 65, long flights place similar stress on your circulation. Sitting still, dehydration, and pressure changes affect everyone, regardless of how fit or young they feel.

That is why she recommends preparing your body for travel just as seriously as you prepare your suitcase.

Wear the Right Protection Before You Fly

Compression socks are not just for people with medical conditions. Dr. Malik calls them non-negotiable for air travel. A compression level of 15 to 20 mmHg helps mechanically push blood upward, prevents swelling, and supports healthy circulation.

The key is timing. Put them on before you leave home, not after you board the plane, so your veins are supported from the very start.

Hydration Is a Flight Essential

Her rule is simple. Drink eight ounces of water for every hour you are in the air. This helps keep your blood from becoming too thick.

Coffee, alcohol, and wine do not count. In fact, they make dehydration worse. If you are serious about flying safely, water needs to be your main beverage.

Keep Your Calf Muscles Active

Every 30 minutes, Dr. Malik recommends doing 30 ankle pumps. Lift your toes up and down as if you are pressing a gas pedal. This simple movement activates your calf muscles and helps clear stagnant blood from your legs, even if you cannot get up and walk.