That Nightlight In Your Bedroom? It Could Be Raising Your Heart Attack Risk

StudyFinds ^ | Oct 27, 2025 | Research led by Daniel P. Windred, PhD (Flinders University)

[BFW]

In A Nutshell

Sleeping with the lights on is linked to a 42% higher risk of heart attack compared to sleeping in darkness, based on a study tracking nearly 90,000 adults over 9 years.

The brightest bedrooms also showed higher risks for heart failure, coronary artery disease, irregular heartbeat, and stroke.

The connection held even after accounting for diet, exercise, smoking, and genetics, suggesting light at night is a factor worth managing for heart health.

Simple fixes like blackout curtains, turning off devices, and keeping bedrooms dark may help protect your heart.

Maybe it’s the glow from your alarm clock, the TV you fall asleep to, or the hallway light you leave on throughout the night. Whatever the source, sleeping with ambient light might be doing more than disrupting your sleep—it could be affecting your heart. A study of 89,000 people found those with the brightest bedrooms had a 42% higher rate of heart attacks over nearly 10 years.

[Z28.310]

Our bodies and brains require sound sleep.
Addresses sleep problems and light and also melatonin’s relationship to cancer (especially breast cancer- hint breast cancer stops multiplying with melatonin):

“Melatonin better than expected”
(52 minutes and worth the time)
https://m.youtube.com/watch?v=I7YIRqTNmuY

[9YearLurker]

The older and more frail, I would think, would be more likely to have nightlights on.

[PLMerite]

“Sleeping with the lights on is linked to a 42% higher risk of heart attack compared to sleeping in darkness...”

Yes, you can really see what is creeping around in the night.

[dware]

I have extremely bad tinnitus. When the room is dark and quiet, it’s all I hear. Constantly. So, I sleep with the TV on. It helps to an extent, otherwise I am all night.

[woodbutcher1963]

You can get an APP for your phone that makes noise. Like the sound of the ocean.
My daughter uses one all the time.
Especially when she travels.

[larrytown]

This! More worried about falling over a snoozing dog on the floor than whatever voodoo juju an led light is going to do.

[Chickensoup]

Same here! Sky and treetops. No shades.

[politicianslie]

This is from the same people who said that eggs are bad for you.

This is ALSO from the SAME PEOPLE who said VAXXXXXXXXXINES are good for you.

Even the dumbest of the dumbest have noticed that 17-year-olds having heart attacks is NOT normal.

Dr. Gundry tried to post a warning in the American Heart Assn publication that said after the VAXXXXXXXXXXXXines were administered to his patients, markers indicating HEAT DAMAGE went through the roof. The Medical Associations ALL went to great lengths to hide the face that the mRNA C-19 vaxxxxxxxxxies were causing HEART DAMAGE.

Now they are trying to tell the sheeple that it's the blue lights causing heart attacks! If only Dr. Gates could have kept the population getting SIX MONTH BOOSTERS and Dr. Gates would be back on his population reduction goals.

This is the corrected post because the original, which I have but I'm too lazy to link it, made it clearer, IT's the VAXXXXXXXXXXXXines causing the heart damage!

[Songcraft]

Some thread background music for you...

      "Paint It Black" - The Rolling Stones   (at about 2:48)

[philman_36]

The ever ubiquitous and ambiguous "could" and "might".

Once my eyes are closed and I'm asleep I don't notice the light.

Did they find people who slept with one eye open to conduct their study? /rhetorical question

[GingisK]

Spiral staircase in a bedroom seems unusual.

[GingisK]

Try a pair of bone conduction earphones and put on sleep music from Spotify.

[GingisK]

I cultivated technique and faith in my night vision. You’d be surprised at what I can do in what most people think as “dark”.

[fruser1]

How about the glow from data centers?

[larrytown]

You’d be surprised at what I can do in what most people think as “dark”.

[eyeroll] I'll take your word for it.... :D

[fidelis]

The actual truth —that they REALLY don’t want you to know— is that night lights are actually Monster Beacons! You got a nightlight? Guaranteed, Monsters under the bed...

[fortes fortuna juvat]

If I kill my night light, I’ll have an 1100% higher chance of stumbling down the spiral staircase after tripping over a cat.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Suggestion: About 10 years ago I hit on the idea of placing flashlights in various places around my house, garage, barn, etc. It’s surprising how helpful it is to be within reach of one, even those little inexpensive ones sold at the dollar stores for a couple of dollars, especially in bedrooms, kitchens, and bathrooms.

[yuleeyahoo]

I experience a more restful sleep when ever I use a sleep mask.

[PJ-Comix]

I once sold 1000 Jesus nightlights in about 2 weeks. I bought them all for $50 and ended up selling them for over $500. The guy I bought them from told me they were tough to sell but I had an idea. I better not say how I did it but it was actually pretty funny but some might take it the wrong way so at least online I shall refrain from going into detail. However, it does bring back some interesting memories. All I’ll say is that I had two very different clientele. One were anglo hipsters and the other were Hispanics.

[Diana in Wisconsin]

“Now what do I do about the monsters under my bed?”

Make sure to use under the bed for storage. I have two HUGE down comforters in bags under my bed; no monsters. :)

Wait a minute...maybe they’re living...IN THE BAGS! *SCREAM*