How light can heighten depression

Sleeping with even a little bit of light in your bedroom at night can heighten depression, says a new study from the American Journal of Epidemiology.

Even when other factors were taken into consideration — like whether the patients smoked, ate poorly, etc — this increase in light in the bedroom accounted for a big jump in depression. 900 elderly Japanese patients were studied over the course of 2 years and it was found that those with over 5 lux had a higher chance of developing depression by 60-65%. Out of the 900 people in the study, just 150 of those slept in rooms with more than 5 lux.

A 'lux' is roughly the amount of light emitted from a candle 1 meter away. To put things in perspective, ABC News reports that a bedroom at night with the lights on is roughly 50 lux, while being outside in bright sunlight can reach anywhere from 10,000 to 25,000 lux.

The study appears to show a correlation between circadian rhythms and light exposure and depression. With more and more people using their phones, tablets, and computers in the bedroom well into the night hours, this appears to lead to a higher risk of developing depression. Lack of sleep can beget a wide array of other health problems, including depression, weight gain, and even cancer.

Source: goo.gl/6jH8Rh

Comments (12)

Stargazer111
Good morning Keepers?.

Another interesting subject of blog. When and where exactly was this study conducted?.

Was there a particular reason that Japanese were specifically chosen for this study.

Are the reasons why also mentioned or investigated in addition to the findings?.

Sorry, too many questions have arisen from this study...laugh

I find myself to be very sensitive to light and not being able to sleep not even with the light of a small candle 2 meters away. I tried to about 3 months ago but, it was just absolutely impossible.

I also find myself to be waking up by the light of the moon.
thumbs up hug
Keepers
Good morning to you Star. bouquet

All I know is that the Japanese are probably the most intelligent people walking and they are always researching something or another.

Same here Star, I sleep best in total darkness and suffer no depression so perhaps this study carries truth to it. Just posted this to possibly help those who battle to sleep. sleep
Keepers
For some added value to this subject.

circadian rhythms

A circadian rhythm is a roughly 24 hour cycle in the physiological processes of living beings, including plants, animals, fungi and cyanobacteria. In a strict sense, circadian rhythms are endogenously generated, although they can be modulated by external cues such as sunlight and temperature.

Circadian rhythms can influence sleep-wake cycles, hormone release, eating habits and digestion, body temperature, and other important bodily functions. Biological clocks that run fast or slow can result in disrupted or abnormal circadian rhythms.


Stargazer111
Keepers wave

"Lack of sleep can beget a wide array of other health problems, including depression, weight gain, and even cancer".

Yup!. The negative effects of the lack of sleep on health have been thoroughly researched and well documented.
thumbs up hug
goldengloss
Hello Keepers
I have read a lot of medical reports on this very subject. Why? because I am a bad sleeper , REM sleep is very rare, and my sleep is fitful and light.
The Mayo Clinic, many other respected Hospitals and research says ~
'The person who suffers from Depression in winter {season ,affective disorder] SAD, should keep their curtains, blinds, open so that they will get the full early morning light.

Watching T.V. up to 2 hours before bed [again the radiation and light emitted] can cause insomnia as can the smartphone near the bed. The Smartphone also can cause Cancer [not 100% verified] but it has warnings within the notifications [see UTUBE].

Many elderly people need to get up at night to go to the loo, so a light that is plugged in to a socket and emits a soft pink or green light can help them from falling. It is also a sense of comfort for those who live alone. I really believe that people have a DNA propensity for Depression, todays life, lived via social media/smartphones, social isolation and fast food doesnot help, and there have always been insomniacs. My father lived to be 96 and was one. My grandmother was a fitful person, she lived to be 94, her sister who was a nun, slept 4 hours, lived to be nearly 100.

Every time I read about the condition, I read something diffferent. This is not to say your Blog is wrong, it is just that I believe that stresses, traumatic events, abuse, all lead to a change in Brain patterns, Serotonin levels drop, Noradrenaline drops, cortisol rises, so one of the first signs of Depression is sleeping badly, and also Anxiety. Reports like this can serve to make the person suffering from Depression more anxious about their sleep and turn to sleeping tablets... which are toxic to the Liver if
taken long term
A very interesting blog . thanks


thumbs up
daniela777
I also tend to be after with GG.

I've always slept with the curtains open and the moon shining and it has never disturbed me nor given me depression.
In fact ...I sleep like a baby with wonderful dreams..happy place


However when living in Germany with the cold weather and the lack of light..my moods certainly changed.

I knew many people who had to have their fix of sunlight artificially a few days a week because of depression.

Since I've been in Spain...I feel good! cheering
daniela777
Sorry..I meant to say..I tend to agree with GG.
Damn phone doh
nonsmoker
"Hello darkness my old Friend" laugh
1to1to1
Hello Keepers, wave Interesting blog. Looking at the other side of the coin, Lack of sunshine (vitamin D) is supposed to be a cause of ms,???? lack of sunshine in winter months is supposed to cause irritability and depression, so how is being exposed to light ,when we are supposed to be in a state of rest going to effect us ???
I used to work ALOT of graveyard shift, and once that working nightshift kicks in, the eating sleeping schedule ..... was off kilter doh I found after working my 1st graveyard shift, (long hrs) I was very tired, but could never sleep,confused I tried sleeping in a totally dark room ,and it never helped. Then one day ,after working my 1st graveyard shift, I feel asleep with the room totally lit up, confused , then I was then able to get back to sleeping in a totally dark room, and my eating , and sleeping schedule got somewhat back on track.
I do believe light and lack of natural sunlight does effect us. Me having ms, know how lack of sunlight, and too much sunlight effects me, so why wouldn t too much light throughout the day, (bedtime) effect us) ?????? It gets a person thinking.
Keepers
Thank you all for your comments. It's a tricky subject. sleep peace Let's try colour to outline parts of your quotes.

I believe that stresses, traumatic events, abuse, all lead to a change in Brain patterns, Serotonin levels drop, Noradrenaline drops, cortisol rises, so one of the first signs of Depression is sleeping badly, and also Anxiety.

Hello GG hopefully we see you soon, thanks for your comment I noticed by your blog that you are going into surgery, holding thumbs that you get well soon. I suppose there is so much to factor in, maybe darkness helps with cell phones and tablets turned off.

I've always slept with the curtains open and the moon shining and it has never disturbed me nor given me depression. In fact ...I sleep like a baby with wonderful dreams.

You are very lucky, I'd be wide awake all night long. wave Daniela

"Hello darkness my old Friend"

Snap Mr Charming. handshake

1st graveyard shift, (long hrs) I was very tired, but could never sleep,confused I tried sleeping in a totally dark room ,and it never helped. Then one day ,after working my 1st graveyard shift, I feel asleep with the room totally lit up

Hey 121, you must have been exhausted. I'd expect the graveyard shift to hinder someone's inner compass, and just like Daniela said people need artificial light because they don't have enough sunlight which will definitely affect depression. I wasn't aware that sunlight affected MS patients though, you taught me something.

I've never suffered depression until my brother passed, and have always slept like a baby even during those dark days. The depression has lifted but I still think of Colin every day. I suppose everyone is different when it comes to sleep deprivation. I should just mention that I couldn't sleep on the Queen Mary 2 from New York to London because the unserviced engines were rubbling through the entire ship. It drove me bonkers, made me appreciate my sleep that much more.

Interesting information, thanks everyone.


thumbs up
Vierkaesehoch
K. Our twin girls sleep with those black soft eye covers. I'll ask them about this. AJE---it's the rare epid study that definitively can direct policy or personal decisions. Aa-V.
Keepers
Hey Hoch, those eye covers are useful when there's too much light to get a good nights sleep, thanks for reminding me. handshake

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