Why Do You Sleep More In Winters? It Has Everything To Do With Your Hormones

Updated Dec 24, 2024 | 08:00 PM IST

SummarySleep needs for most adults range from seven to nine hours per night, regardless of the season. However, it is common to feel like you’re sleeping more in winter.
Sleep In Winters

Sleep In Winters ( Credit: Canva)

There is a scientific reason behind why humans tend to sleep more during winters and it is related to your hormones. Many people notice they feel more fatigued in winter, even though their overall sleep needs remain consistent throughout the year.

Sleep needs for most adults range from seven to nine hours per night, regardless of the season. However, it is common to feel like you’re sleeping more in winter due to the earlier onset of darkness during standard time.

Seasonal Sleep Changes

Recent studies indicate that humans, like some animals, experience subtle seasonal variations in sleep. Research conducted in Berlin found participants slept about an hour longer in winter than in summer, with 30 additional minutes of rapid eye movement (REM) sleep during the colder months. To note, REM sleep is crucial for memory, mood regulation, and immune function.

How Light Affects Sleep

Our sleep-wake cycle or the circadian rhythm is closely tied to sunlight. Bright light signals the body to stay awake, while darkness prompts melatonin production, a hormone that helps regulate sleep. During winter, shorter days and longer nights lead to earlier melatonin release, which may make you feel sleepier earlier in the evening. The same goes for the morning, late sunrise makes you sleep more.

However, social habits, like late-night outings during summer, can disrupt this rhythm. As per a clinical psychologist specializing in sleep, the body may struggle to adjust to sleeping earlier during winter nights, leading to delayed sleep onset or increased sleepiness.

Environmental Changes

The challenge to stay awake for longer hours extends beyond the biological changes that your body goes through. Winter season is the holiday season with celebrations such as Thanksgiving, Christmas and New Year's. Holiday stress, indulgent eating, alcohol consumption, and skipping workouts can also affect sleep. These behaviours, combined with seasonal affective disorder (SAD), may further increase the desire for sleep.

Adapting To Winter Sleep Patterns

While humans do not hibernate, minor adjustments can help manage winter sleepiness. Experts recommend:

- Morning Light Exposure: Natural sunlight or light therapy using a light box can regulate your circadian rhythm and alleviate symptoms of SAD.

- Consistent Sleep Schedule: Maintaining regular sleep and wake times helps stabilize your internal clock.

- Creating a Sleep-Friendly Environment: A dark, quiet, and cool bedroom promotes restful sleep.

Additionally, workplaces and schools could consider later start times during winter to align with natural light patterns, enhancing alertness and productivity.

When Should You See A Doctor?

If seasonal sleep changes lead to depression or difficulty functioning, consult a healthcare professional. According to health experts, seeking support for seasonal depression is important for maintaining overall health and well-being.

While winter's shorter days can make you feel sleepier, understanding the role of light and adjusting your habits can help you navigate the season effectively. Embrace these changes, but don’t hesitate to seek help if you find yourself struggling with sleep or mood disruptions.

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India Sees Rising Death Risk From Chronic Diseases While Other Countries Report Decline, Finds Lancet Study

Updated Sep 16, 2025 | 09:31 AM IST

SummaryA new Lancet study shows India as an outlier in global health trends, with rising deaths from chronic diseases like heart disease and diabetes, while most countries report declines. Alarmingly, Indian women face a sharper increase in risk, raising concerns about health equity, long-term care access, and meeting global disease reduction goals.
India Sees Rising Death Risk From Chronic Diseases While Other Countries Report Decline, Finds Lancet Study

Credits: Canva

A new global analysis published in The Lancet has revealed that the probability of dying from non-communicable diseases (NCDs) such as cancer, diabetes, and heart disease has increased in India over the past decade. The study points out that while four out of every five countries saw a decline in chances of dying from a chronic disease, India may stand as an outlier in this health trend.

The study, conducted by researchers from Imperial College London, the World Health Organisation (WHO), and other global institutions, looked at mortality data from 185 countries and territories between 2010 and 2019. India registered a worrying rise, with women experiencing a sharper increase than men.

What the Numbers Show

Globally, the probability of dying from an NCD between birth and age 80 declined in 82% of countries for females and in 79% for males. These improvements were largely due to fewer deaths from cardiovascular diseases, certain cancers, and conditions such as stroke.

In stark contrast, India joined a small group of countries, including Papua New Guinea,, where deaths from chronic illnesses went up for both genders. The analysis noted that “deaths from most causes of chronic disease increased in India, with heart disease and diabetes contributing heavily.”

The report also underlined that among large nations, countries such as China, Egypt, Nigeria, Russia, and Brazil recorded declines in both male and female chronic disease death risks, highlighting India’s outlier status.

Women Face Higher Risk

The Lancet study highlighted an alarming gender divide in India. While both men and women saw an increase in mortality risk, the rise was steeper for women. This suggests that Indian women are facing growing vulnerability to lifestyle-related illnesses such as diabetes and cardiovascular conditions, potentially compounded by limited access to timely diagnosis and treatment.

Also Read: A Higher Dose Of Semaglutide Helps 1 In 3 Obese Adults Lose 25% Body Weight: Lancet Study

Globally, women have generally benefited more from improved chronic disease management compared to men. India’s reversal of that trend raises fresh concerns about the country’s ability to meet health equity goals.

What Is Driving the Trend?

Experts say India’s growing urbanization, dietary changes, sedentary lifestyles, and high levels of air pollution are fueling the surge in NCDs, as is also stated in a recent 2025 study published in Cureus, titled: Urban-Rural Health Transitions in India: A Comprehensive Review of Non-communicable Disease Trends and Risk Landscapes. Additionally, another 2023 study published in Cureus, titled: The Transformation of The Indian Healthcare System, notes that the country has long struggled with health system constraints, including unequal access to preventive and primary care.

While deaths from communicable diseases have declined due to better vaccination and treatment, the vacuum has been filled by chronic conditions that demand long-term management. The study points to heart disease and diabetes as the leading drivers of India’s rising death risk, alongside growing cases of dementia, alcohol-related disorders, and cancers of the pancreas and liver.

Global Commitments Under Pressure

The findings come at a critical time. Nations, under the United Nations’ Sustainable Development Goals (SDGs), have pledged to reduce premature mortality from NCDs by one-third by 2030. The upcoming Fourth High-Level Meeting of the UN General Assembly is expected to set out a new vision for tackling these conditions, including scaling up prevention and treatment.

For India, however, the new data suggests the country risks falling further behind on these global commitments.

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AI Can Predict Blindness Years Before It Happens: Major Breakthrough in Eye Health

Updated Sep 16, 2025 | 05:00 AM IST

SummaryVision loss can happen due to many reason, some of which are preventable while others may not be. However, there are also times diseases, which were not recognized early enough, end up causing people to lose their sight. So, how can we increase the rates of diagnosis, could AI be of help?
AI Can Predict Blindness Years Before It Happens: Major Breakthrough in Eye Health

(Credit- Canva)

The past year we have observed more and more incorporation of AI in different aspects of our life. Not just for writing or making pictures, it is also now being used to identify people’s faces through facial recognition software, helping in documentation as well as in medicine. New software are being developed to assist medical professionals, not only does this help them identify diseases but also speeds up the process.

Having AI in medicine could also lower the cost and help many people get the help they need. This has led researchers to look for different ways to teach AI how to recognize and diagnose issues. One such disease that can cause people blindness, could actually be identified by AI, according to new research.

A new study has shown that artificial intelligence (AI) can accurately predict which patients with a condition called keratoconus need treatment to save their vision. This research, presented at the 43rd Congress of the European Society of Cataract and Refractive Surgeons (ESCRS), is a major breakthrough for managing this eye disease, which often affects young adults. The findings were shared at a major conference for eye surgeons.

What is Keratoconus?

Keratoconus is an eye condition where the cornea, the clear, front part of the eye, starts to bulge outwards and change shape. This causes vision to become blurry and distorted. If the condition gets worse, a person might eventually need a cornea transplant, which is a major surgery.

Right now, doctors can only track the disease by having patients come in for frequent check-ups over many years. This is time-consuming for both the patient and the hospital. The main treatment, called cross-linking, is very successful at stopping the disease, but doctors haven't had a reliable way to know which patients will get worse and need the treatment right away versus those who can just be watched.

How the AI Algorithm Works For Medicine

Researchers from a London eye hospital and a university created an AI program to help with this problem. They trained the AI using over 36,000 images of patients' eyes taken with a special scanner. The AI looked at these images and other patient data to learn how to predict the disease's future course.

The AI's performance was very impressive. It was able to correctly sort patients into two groups from their very first visit: a low-risk group that didn't need immediate treatment, and a high-risk group that did. The AI was correct about two-thirds of the time. When the researchers added data from a second visit, the AI's accuracy jumped to 90%, meaning it was right nine out of ten times.

Patient Care

This new AI tool could change how doctors treat keratoconus. By using the AI to identify high-risk patients early, doctors could perform the preventative cross-linking treatment before vision gets worse. This would help patients avoid vision loss and the need for a major surgery like a corneal transplant.

For low-risk patients, the AI would prevent them from having to make unnecessary and frequent hospital visits, which would also free up doctors and hospital resources. The researchers are now working on making the AI even better, with the goal of using it to help with other eye problems as well, such as infections and inherited diseases.

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British Tourists Urged to Take This Step Before Travelling as Measles Cases Soar: How To Identify It

Updated Sep 16, 2025 | 01:00 AM IST

SummaryMeasles is one of the most contagious diseases present in the world and recently there has been a sharp incline in the number of cases globally. However, what is causing this rise and how can we make sure it does not affect us or anyone around us. Here is what you need to know.
British Tourists Urged to Take This Step Before Travelling as Measles Cases Soar: How To Identify It

The UK Health Security Agency (UKHSA) is urging British tourists to take one simple step to prevent their autumn holiday from being "ruined" by illness. Amid a potential rise in infections this year, the agency is advising travelers to make sure they are protected against measles before heading abroad.

What is Measles?

Measles is a very contagious illness that can make you feel quite sick. It's caused by a virus and can be serious, sometimes leading to dangerous problems like brain swelling or pneumonia. The best way to protect yourself and others is to get the measles vaccine. The first signs of measles can feel like a bad cold or flu. You might have:

  • High fever
  • A cough
  • Runny nose
  • Red or watery eyes
  • Tirednes
  • Sore throat and muscle pain

Are Measles Cases Rising Globally?

Measles is a highly contagious illness that can cause a fever, a cough, red eyes, and a rash. It can be prevented with the MMR vaccine. The World Health Organization (WHO) reports that measles cases in Europe have reached a 25-year high, with over 127,000 cases reported last year. More than half of these cases required hospitalization, and there were 38 recorded deaths.

The UKHSA issued a message on social media platform X, stating, "Planning an autumn or winter getaway? Don't let measles ruin your holiday. Two doses of the #MMR vaccine give you full protection, and you can catch up at your GP practice if you've missed any."

Why Vaccination Is Key For Measles

Getting vaccinated against measles is a critical step in staying healthy. Measles isn't just a simple rash; it's a serious illness that can lead to severe, life-threatening problems like pneumonia (a lung infection), meningitis (brain inflammation), and even blindness.

The good news is that the MMR vaccine is highly effective at preventing measles, as well as mumps and rubella. In the UK, all children are offered this vaccine, and two doses can give you protection for life. If you're not sure if you or your child has had the vaccine, you can contact your local doctor's office (GP surgery), which can provide it for free. Health experts emphasize that when more people are vaccinated, it protects everyone, especially those who can't get the vaccine themselves.

What Measles Looks Like: How To Identify Measles?

According to Center of Disease Control and Prevention, a measles rash is a key sign of the illness, and it has a very specific pattern. It usually begins as flat, red spots on your face near the hairline. Over the next few days, it will spread downwards to cover your neck, body, arms, and legs.

Facial Rash: The rash often appears as small, red, raised spots on the forehead and cheeks. It might look different depending on a person's skin tone. as small, red, raised spots. It can look different on various skin tones.

Body Rash: The rash won't stay on your face; it will spread across your entire body.

Other Symptoms: The rash is usually accompanied by other symptoms, such as a runny nose, watery eyes, and a cough.

Healing: As you start to recover, the rash will fade, and your skin may begin to peel or flake off.

Koplik spots: One of the earliest signs of measles is tiny white spots with a bluish center that show up inside the mouth. These are called Koplik spots and often appear a few days before the main rash.

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