Global Health Matters
Global Health
After 11 pm, be a bat, love the black!
Here are 5 super-simple take-home messages you can text to a friend or post on the family fridge:
Even a little glow from the TV or phone raises your heart-risk by up to 56%.
People with the darkest nights had the lowest chance of heart attack, stroke or heart failure.
Just 7 nights of bright light is enough to show the danger.
The same light hurts women and younger adults more.
- – Phone on Night-mode
- – Blackout curtains or eye-mask
- – Red bulb if you need a night-light
Your 10-second bedtime rule:
“After 11 pm, my room = cave-dark.”
Do it tonight and your heart will thank you tomorrow!

Global Health
Conclusion
Night light is a new, independent heart risk as strong as smoking or salt. Switch off after 11 pm and cut your risk by up to 56%. One week of dark sleep = 9 years of stronger heart.
