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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India Approves World's First Synthetic CBD Therapy For Anxiety Disorders

Updated Jul 14, 2026 | 05:00 PM IST

SummaryLeiutis Pharmaceuticals' newly approved medicine contains a fully synthetic cannabidiol (CBD) active pharmaceutical ingredient (API), meaning no cannabis plant material is used in its production.
India Approves World's First Synthetic CBD Therapy for Anxiety Disorders

Credit: iStock

In a global first, India's drug regulator has approved a fully synthetic cannabidiol (CBD) therapy for the treatment of mild to moderate anxiety disorders, marking a significant milestone in cannabinoid-based medicine.

The Central Drugs Standard Control Organisation (CDSCO) has granted regulatory approval to Zenara Pharma, the manufacturing partner of Leiutis Pharmaceuticals, to produce a synthetic cannabidiol oral solution (150 mg/ml). The prescription-only therapy is intended to be used alongside cognitive behavioural therapy (CBT) for managing mild to moderate anxiety disorders.

In a statement, Leiutis Pharmaceuticals said the approval follows a successful Phase III clinical trial conducted in India under CDSCO guidelines. A Phase IV post-marketing study will now be carried out to further evaluate the therapy.

World's First Fully Synthetic CBD Therapy

Leiutis noted that "this is the first regulatory approval anywhere in the world for a fully synthetic cannabidiol oral solution for anxiety disorders".

K. Chandrasekhar, CEO and Managing Partner of Leiutis Pharmaceuticals LLP, said the approval is the result of nearly a decade of cannabinoid research, including the development of a proprietary synthetic cannabinoid manufacturing process, novel drug-delivery technology, and extensive preclinical and clinical studies.

“Developed entirely in India and protected by patents in key markets, this approval is a significant milestone for our innovation pipeline, paving the way for next-generation cannabinoids. We thank the Government of India, clinical investigators, researchers and study participants who made it possible,” Chandrasekhar said.

What Is the New CBD Therapy?

The newly approved medicine contains a fully synthetic cannabidiol (CBD) active pharmaceutical ingredient (API), meaning no cannabis plant material is used in its production.

The therapy combines:

  • A synthetic cannabidiol API developed by Biophore India Pharmaceuticals.
  • Leiutis Pharmaceuticals' proprietary nanodispersible drug-delivery platform to improve absorption.
  • Manufacturing by Zenara Pharma at facilities compliant with CDSCO, US FDA and European regulatory standards.

Biophore has also filed a United States Drug Master File (US DMF) for the synthetic CBD manufacturing process, reflecting internationally recognized quality standards.

Why This Approval Matters

The approval comes at a time when anxiety disorders are rising sharply in India. According to a recent analysis from the Global Burden of Disease Study published in The Lancet, anxiety disorders in India increased by 123.5% between 1990 and 2023.

The prevalence rose from 2,591.9 cases per lakh population in 1990 to 5,792.8 cases per lakh in 2023, driven largely by increasing rates of anxiety and depression.

What Is CBD?

Cannabidiol (CBD) is one of the naturally occurring compounds found in hemp and cannabis plants. Unlike THC, it does not produce intoxicating effects.

CBD has been studied for several potential therapeutic uses, including:

  • Reducing anxiety symptoms
  • Relieving chronic pain
  • Improving sleep
  • Managing certain seizure disorders
  • Reducing inflammation

The newly approved product, however, uses synthetic CBD, which is produced entirely in a laboratory rather than extracted from the cannabis plant. Synthetic CBD offers a highly consistent and contaminant-free formulation, helping standardize dosing and quality.

Does CBD Have Proven Medical Benefits?

CBD already has established medical use in certain seizure disorders in some countries and continues to be investigated for a range of other conditions, including anxiety, chronic pain, inflammation and schizophrenia.

CBD is generally well-tolerated, but some users may experience mild side effects like drowsiness, reduced appetite, or diarrhea. Side effects are often due to interactions with other medications.

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What Every Breast Cancer Survivor Should Know After Completing Treatment

Updated Jul 14, 2026 | 01:00 PM IST

SummaryThe body changes after cancer and coming to terms with this takes time. Worries about appearance and intimacy are entirely understandable, and they are worth raising during clinic visits, because often there are practical ways to help.
What Every Breast Cancer Survivor Should Know After Completing Treatment

Credit: iStock

For many women, the last day of treatment feels like crossing a finish line they have been running toward for months. There is relief, there is gratitude, and there is often a quiet sense of disbelief that it is actually behind them. But finishing treatment is not really the end of the journey. It is the start of a new chapter—one we call survivorship—and it deserves just as much care and attention as everything that came before. Understanding what lies ahead can make all the difference between living in fear and living well.

Follow-Up Care Must Continue

Recovery does not mean walking away from the hospital. In the first few years after treatment, survivors are usually asked to return for follow-ups. The reason behind this is simple: if cancer ever returns, catching it early gives the best chance of treating it successfully. Or in many cases it a good habit to keep a check and boost confidence to the survivors.

Impact of treatment

What often surprises many women is that the impact of cancer treatment may continue even after active treatment ends. Recovery is a gradual process, and experiences can vary significantly from one individual to another depending on the type of cancer, treatment approach, and overall health. In terms of breast cancer, some women may continue to face physical, emotional, or lifestyle-related challenges during survivorship, while others may require ongoing therapies or follow-up care to reduce the risk of recurrence. What must always be remembered is that these issues cannot be addressed in silence. Open communication between the woman and her treatment team may allow problems to be sorted out in time, with the proper support being provided.

Emotional Health Deserves Equal Attention

Healing is not only physical. Many survivors carry a constant worry about whether the cancer will come back, while others feel strangely lost once the busy routine of treatment falls away. These emotions are completely natural and nothing to be ashamed of. Speaking to a counsellor, joining a support group, or simply being honest with the care team can lighten the burden enormously.

Healthy Habits Support Recovery

The choices made every day genuinely shape long-term health. Eating plenty of vegetables, fruits, and whole grains, and staying active with something as simple as a thirty-minute walk most days, makes a real difference. Keeping to a healthy weight is especially important, because carrying excess weight is linked to a higher chance of the cancer returningi. Cutting back on alcohol and staying away from tobacco add further protection.

Adjusting to Physical Changes

The body changes after cancer and coming to terms with this takes time. Worries about appearance and intimacy are entirely understandable, and they are worth raising during clinic visits, because often there are practical ways to help.

Be an Informed Advocate

No one understands a patient's body better than the patient herself, which is why every survivor should feel empowered to ask questions. Before treatment ends, it is wise to request a survivorship care plan. This is a summary of the treatment received, together with a clear schedule for future check-ups. Such a document becomes an invaluable guide, both for the survivor and for any doctor she may see in the years ahead.

Looking Ahead

Survivorship is rarely a straight line. There will be good days and harder ones, moments of confidence and moments of doubt. With regular check-ups, a few sensible habits, and the support of people who care, life after breast cancer can be every bit as rich and full as before—sometimes even more so. Because in the end, the goal of cancer treatment was never just to help women survive. It was always to help them truly live.

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Healthy Lifestyle Changes Improve Memory, Thinking In Older Adults At Dementia Risk: The Lancet

Updated Jul 13, 2026 | 01:14 PM IST

SummaryDementia is an umbrella term used to describe a significant decline in mental function that is serious enough to affect everyday life. It commonly impacts memory, thinking, and reasoning skills.
Healthy Lifestyle Changes Improve Memory, Thinking In Older Adults At Dementia Risk: The Lancet

Credit: iStock

More than 57 million people worldwide are living with dementia, a number expected to triple to over 152 million by 2050. While there is still no cure, growing evidence suggests that healthy lifestyle changes can help improve brain health and preserve cognitive function in older adults at risk of dementia.

A major study published in The Lancet suggests that adopting healthy lifestyle habits can significantly improve memory and thinking skills in older adults at risk of dementia.

The study found that a culturally adapted, structured lifestyle program delivered across 11 Latin American countries produced meaningful improvements in cognitive function over two years. Participants in the intensive program showed 55 per cent greater improvement in overall cognition than those who received general health advice.

Lead author Lucia Crivelli, principal investigator at Fleni, a neurological institute in Buenos Aires, Argentina, said culturally adapted lifestyle interventions can be successfully implemented across diverse communities and "deliver cognitive benefits" for people at risk of dementia.

"Addressing multiple lifestyle factors can positively impact brain health and may eventually be combined with emerging drug therapies to reduce cognitive decline and dementia risk," added Heather M. Snyder, senior vice president of medical and scientific relations at the Alzheimer's Association.

What Did The Study Find?

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The clinical trial enrolled 1,065 adults aged 60 to 77 years at increased risk of cognitive decline across 12 sites in Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, the Dominican Republic, Ecuador, Mexico, Peru and Uruguay.

Participants were randomly assigned to one of two groups. The Systematic Lifestyle Intervention (SLI) group received ongoing coaching, supervised exercise, personalized nutrition counselling, cognitive training and regular monitoring of cardiovascular risk factors. The Flexible Lifestyle Intervention (FLI) group received general lifestyle recommendations through periodic health education sessions without continuous coaching or supervision.

The structured program combined supervised exercise, a brain-healthy MIND diet, computer-based cognitive training, regular monitoring of blood pressure, blood sugar and weight, and social engagement activities designed to encourage accountability and interaction.

To improve participation, the intervention was adapted to local cultures. Exercise sessions incorporated familiar activities such as salsa and tango, while nutrition counselling focused on regionally available foods including avocado, quinoa, açaí, chia seeds, pumpkin seeds and aguaymanto.

Read More: Study Decodes Why COVID Survivors Continue To Suffer Vision Problems

After two years, participants in the structured intervention experienced:

  • 55 per cent greater improvement in overall cognitive performance than those in the flexible intervention group.
  • The largest gains in memory.
  • Significant improvements in executive function, including planning and decision-making.
  • Faster processing speed.

The cognitive benefits were consistent regardless of participants' age, education level, ethnicity or genetic risk for Alzheimer's disease.

The authors noted that while the program improved performance on cognitive tests, it did not determine whether the intervention prevents dementia. They said longer-term follow-up is needed to establish whether these cognitive improvements ultimately reduce the risk of developing the disease.

What Is Dementia?

Dementia is an umbrella term used to describe a significant decline in mental function that is serious enough to affect everyday life. It commonly impacts memory, thinking, and reasoning skills. Dementia itself is not a single disease but a collection of symptoms caused by underlying conditions such as Alzheimer’s disease or vascular dementia.

Common signs include

  • memory problems,
  • confusion,
  • difficulty finding words,
  • changes in mood or behavior,
  • trouble completing familiar tasks.

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