Sleep

Want to catch up on sleep over the weekend? Science says it may not work

Extra weekend sleep can ease fatigue and briefly sharpen alertness, but it cannot reverse deeper health effects of chronic sleep deprivation or fix long-term sleep debt, says a doctor

Disrupted body clock could raise risk of dementia later in life: Study

Disrupted circadian rhythms are often associated with poor sleep. For decades, poor sleep has been suspected to contribute to both dementia and heart disease

How many hours of sleep do you need at each age? A doctor's guide

Doctors explain how brain development, hormones and the body clock affect how much sleep is healthy at every stage of life

Want a longer life? Why sleep may matter more than diet or exercise

A large US study tracking sleep and longevity across counties finds that insufficient sleep may shorten life expectancy more than poor diet or lack of exercise, second only to smoking

Long-term melatonin use may raise heart failure risk by 90%: Study

A major global study presented at the American Heart Association's 2025 Scientific Sessions links long-term melatonin use to a 90% higher risk of heart failure and nearly double the death rate

Google working on 'AI health coach' for better sleep, stress, and fitness

Google's upcoming AI coach, powered by Gemini and built under Fitbit, uses your health data to offer real-time insights, sleep tips and customised workout recommendations

Chronic poor sleep may nudge brain toward dementia, find researchers

Chronic insomnia appears to accelerate the trajectory towards dementia, not through one pathway but several

Irregular sleep may trigger 172 diseases, warns biohacker Bryan Johnson

Sleep irregularity is not just bad for rest-it may be a hidden trigger for liver, metabolic, and chronic diseases, says biohacker Bryan Johnson, citing new wearable-tracked data

Double shift, half the sleep: India's women lose rest to unpaid work

From late-night chores to early alarms, Indian women's sleep is sacrificed for the family's routine

Want to gain muscle and boost metabolism? Deep sleep may be the secret

UC Berkeley researchers show how deep sleep triggers growth hormone release that aids muscle growth, fat burn, and cognitive health - and why poor sleep disrupts it all

From stress to habits: Why some people walk or talk in their sleep

Stress, fatigue, and erratic schedules can all trigger sleepwalking or sleep talking; doctors explain what happens in your brain and when to worry

Sleeping with lights on may raise risk of heart disease, says new study

Exposure to bright light at night may disrupt circadian rhythm and increase the risk of heart failure, stroke, and arrhythmias, particularly in women

Global warming may make sleep apnoea worse and widespread, warns study

From 788,000 lost healthy years to $98 billion in damages, climate-linked sleep apnoea surge could become a hidden global crisis, says a new study

Night owls at higher risk of age-related cognitive decline, finds study

A night owl or an evening person with a late sleep-wake cycle could be at a higher risk of cognitive decline with age compared to an early bird or a morning person, a study has found. Chronotype refers to one's sleep-wake type or times during the day when one naturally tends to be awake and asleep. A 'night owl' chronotype is said to have a later sleep-wake cycle, compared to an 'early bird' or a 'lark'. "Are you an early bird or a night owl? It's hard to adjust what your biological clock your so-called chronotype is, but you can adjust your life to it as best you can," study author Ana Wenzler, from the University Medical Center Groningen, the Netherlands, said. Analysing the performance of about 23,800 participants on a cognitive test over a period of 10 years, the study found that evening people decline cognitively faster than morning people. The findings have been published in The Journal of Prevention of Alzheimer's Disease. "Unhealthy behaviour such as smoking, drinking a

12 sleep myths doctors want you to stop believing-before it harms you

Fact-check Friday: From sleep debt to screen time and naps, we bust popular myths that could be silently harming your brain, mood, energy, and long-term health, with expert tips for better sleep

What's making India lose its sleep? Late nights, stress, and screen time

India's sleep crisis: 59 per cent of Indians get less than six hours of uninterrupted rest, raising serious health concerns. So, what's keeping India awake?

Daylight saving, early school cost billions in productivity, health: Report

One simple decision - keeping our clocks aligned with the natural cycle of the Sun - could save lives, prevent accidents and improve mental well-being

What is sleep divorce? Why are couples opting to 'break up' at bedtime?

'Sleep Divorce' simply refers to a couple's decision to sleep in different rooms rather than the same bed while on vacation. Couples these days are increasingly exploring this new trend

30 minutes of sleep a day? Japanese man says it's his secret to success

Daisuke Hori, a 40-year-old entrepreneur from Japan, claims to have trained himself to function on just 30 to 45 minutes of sleep per day for the past 12 years

Hitting snooze button: Rest assured, sleep economy is taking off

From AI-enabled mattresses and pillow menus to sleep therapists, restful nights are big business