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.
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.
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.
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.
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.
Credit: AI generated image
Individuals who experience tingling, numbness, and burning sensations in their hands and feet often disregard these early symptoms, especially after a long drive, extended standing, or sleeping. Many frequently take painkillers to ease their discomfort in the hope that their pain and other symptoms will quickly go away.
These types of persistent or recurrent symptoms, however, could be a signal of a nerve health issue such as peripheral neuropathy. Vitamin B12 is crucial for the nervous system, and its deficiency could be one of the potential causes.
Early detection of these symptoms and appropriate, timely medical advice can help facilitate immediate intervention. Addressing nutritional gaps under medical guidance may help support overall nerve health and reduce the risk of progression.
Neurotropic B-vitamins are essential for preserving the structure and function of nerves. A lack of these vitamins may present as:
Common Vitamin B12 deficiency signs include persistent fatigue, sensory disturbances, imbalance and neuropathic discomfort. Early detection supports timely intervention and may help prevent further nerve damage.
The right nutritional support plays a key role in preserving nerve function:
An appropriate and active approach to nerve care includes nutritional adjustments, metabolic regulation, and the right assistance to support symptoms.
Dietary Optimization: Encourage intake of foods rich in B-vitamins such as whole grains, dairy, eggs, legumes, and leafy vegetables. However, for those with restrictions, the diet alone might not be enough, especially in cases of established deficiency, malabsorption, or restricted diets.
Targeted Treatment: When guided by a healthcare professional, oral supplementation can be considered as part of a comprehensive plan.
Credit: AI generated image
Dozens of food products, including chocolates, snack mixes, popcorn, chips, and nuts, have been recalled in the US over the risk of salmonella contamination.
The recall is due to a specific ingredient — milk powder supplied by California Dairies — used in several products and snacks, particularly in seasonings.
According to the Food and Drug Administration (FDA), the potentially tainted powdered milk and buttermilk were voluntarily recalled on April 20.
Ghirardelli Chocolate Powders:
Also read:India Launches SEHAT Mission To Connect Farming With Nutrition And Health
The FDA urges people who purchased the products to throw them away or return them for a refund.
A separate Salmonella recall impacting 12 flavors of the popular chocolate brand Spring & Mulberry was also recently announced by the FDA, but appeared to be linked to a date supplier. It wasn't immediately clear if there was any connection to the California Dairies recall.
Another is a public health alert issued by the US Department of Agriculture’s Food Safety and Inspection Service (FSIS) for headcheese over possible contamination with Listeria monocytogenes (Lm).
Read More: Why The Norovirus Outbreak On A Caribbean Cruise Ship Is Not A Cause for Panic
As per the US Food and Drug Administration (FDA), Salmonella is a group of bacteria that can cause gastrointestinal illness and fever called salmonellosis. It can be spread by food handlers who do not wash their hands and/or the surfaces and tools they use between food preparation steps. It can also happen when people consume uncooked and raw food. Salmonella can also spread from animals to people.
The FDA notes that people who have direct contact with certain animals, including poultry and reptiles, can spread the bacteria from the animal to food if hand washing hygiene is not practiced.
Pets, too, could spread the bacteria within the home environment if they eat food contaminated with Salmonella.
Common symptoms of Salmonella include
Children younger than 5, adults 65 and older, and people with weakened immune systems are more likely to have severe illness.
Credit: AI generated image
Ivermectin, an antiparasitic medication, which gained widespread attention during the COVID-19 pandemic, is back in the spotlight again — this time in connection with the ongoing hantavirus outbreak linked to the MV Hondius.
According to the latest update from the World Health Organization (WHO), nine hantavirus cases have been confirmed so far, including three deaths.
Health authorities have also confirmed that the outbreak involves the Andes strain of hantavirus — the only known hantavirus strain capable of human-to-human transmission.
While global health agencies, including the WHO, Centers for Disease Control and Prevention (CDC), and the European Centre for Disease Prevention and Control (ECDC), continue to maintain that the overall public health risk remains low, memories of the COVID-19 pandemic and the disruption it caused remain fresh. As a result, fear, speculation, and misinformation are once again spreading rapidly online.
"Hantavirus is an RNA virus, and ivermectin should work against it," claims a May 6, 2026, post on X from Mary Talley Bowden, an ear, nose, and throat doctor suspended in 2021 by Houston Methodist Hospital for spreading Covid-19 misinformation.
"I actually texted her today and asked what we can treat hantavirus with. I'm so glad she posted it," former Texas representative Marjorie Taylor Greene wrote on X as she amplified Bowden's assertions about ivermectin.
HealthandMe spoke to experts to understand the truth behind these claims, and they dismissed the misinformation surrounding them stat.
Dr Jatin Ahuja, Consultant, Infectious Disease, Apollo Delhi, noted that, "there is currently no strong scientific evidence or official guideline supporting ivermectin as a proven treatment for hantavirus in humans".
He advised people to avoid self-medication or depending on unverified online claims and to consult a doctor at the earliest if they experience any symptoms.
Dr Rajiva Gupta, Senior Consultant, Internal Medicine, CK Birla Hospital, Gurugram, added that ivermectin is not approved for the treatment of hantavirus infection by major global regulatory and public health agencies, including the World Health Organization, Centers for Disease Control and Prevention, or the US Food and Drug Administration.
"Current claims linking ivermectin to hantavirus treatment appear largely unverified and are being circulated primarily through social media platforms," he told HealthandMe.
Also read: Why The Norovirus Outbreak On A Caribbean Cruise Ship Is Not A Cause for Panic
Ivermectin is a well-established medication that is highly effective against parasites. It was developed to treat topical parasitic infections and has been widely used for conditions like river blindness and scabies.
The drug's significance in treating these diseases was so profound that researchers who studied it won the Nobel Prize in 2015.
The US Food and Drug Administration (FDA) has approved ivermectin tablets for treating specific parasitic infections in humans. It is also available as a lotion to treat lice and as a cream for rosacea. Additionally, veterinarians also use it to prevent and treat parasitic diseases in animals.
Previously, ivermectin also gained popularity as a cancer cure, although there is no scientific evidence for it.
To understand the treatment for hantavirus, let us first look at how the rat-borne virus affects the body.
"Once hantavirus enters the body, it mainly affects the lungs and small blood vessels," Dr Jatin told HealthandMe.
In some patients, the infection can cause fluid build-up in the lungs, which may lead to breathing problems and low oxygen levels.
Further, the severity of symptoms also can vary from person to person and may depend on factors such as the amount of virus a person was exposed to, the body’s immune response, and how early treatment is started.
Like many viral infections, a higher viral load may sometimes be linked to more severe illness, although every patient can respond differently, the experts said.
Read More: High Blood Pressure? Daily Soy And Legume Intake May Help Lower The Risk: Study
One challenge with hantavirus is that the early symptoms are quite non-specific and may resemble several common viral or respiratory infections.
Fever, body ache, fatigue, headache, nausea, and cough are commonly reported in the initial stage. In a few cases, symptoms may progress to breathing difficulty and lung-related complications, which require timely medical care.
Currently, treatments focus on medical care support and managing complications at the earliest stage possible.
"Patients may require oxygen support, hydration, monitoring, and intensive care depending on the severity of the illness. Early recognition and prompt medical attention remain important for better outcomes," Dr Jatin said.
Dr Rajiva noted that approved management for hantavirus infection remains primarily supportive, focused on respiratory and hemodynamic (circulatory) support. Among the therapies explored so far, ribavirin and monoclonal antibodies have shown some potential in experimental settings and animal models, but these are still under investigation and are not widely approved as standard treatment options.
Also read: Hantavirus: Is Climate Change Behind The Outbreak?
Since there is no direct cure for hantavirus infection, prevention becomes extremely important. Key precautions include:
© 2024 Bennett, Coleman & Company Limited