How scientists are shining light on the biology behind seasonal affective disorder

For many of us, autumn's arrival means more than just donning our coziest jumpers and cranking up the central heating. As the days shorten and mornings grow darker, energy levels plummet and a heavy sadness settles in – a condition known as seasonal affective disorder (Sad).

This isn't new. In fact, ancient Chinese texts like the Yellow Emperor's Classic of Medicine have long noted how the seasons can impact our mood. The advice from over 2,000 years ago? "Retire early and get up with the sunrise", keeping one's desires and mental activity quiet and subdued.

Fast forward to today, when scientists are once again shedding light on the biology behind seasonal affective disorder. Research has shown that people's moods do indeed follow a predictable pattern – rising in autumn or winter and dropping in spring. Symptoms include excessive sleepiness, lethargy, and cravings for carbohydrates.

So what's behind this phenomenon? The answer lies in our internal body clock, regulated by light exposure. Without sufficient daylight – especially when combined with artificial light pollution at night – our circadian rhythms can go haywire. And that's not all: a study published last year found fluctuations in the expression of over 4,000 genes in white blood cells and fat across the year.

Researchers are now studying how people with bipolar disorder respond to light cues, too. Dr Cathy Wyse at the University of Edinburgh notes that these individuals may be highly sensitive to seasonal changes and light exposure – triggering their symptoms.

While bright light therapy remains the gold standard for treating Sad, cognitive behavioural therapy can also be just as effective in reframing one's relationship with winter rather than simply managing symptoms.

So what can we do to beat the winter blues? Try this: get outside first thing in the morning, even on grey days. Daylight resets your clock, improves alertness and keeps melatonin at bay. Light therapy lamps – emitting around 10,000 lux – can also be a game-changer. Stick to regular sleep schedules, avoid screens before bed and keep evening lighting warm. And plan some winter pleasures: cosy rituals like hot chocolate or candlelit baths might just be the pick-me-up you need.

Ultimately, the most effective antidote to Sad remains natural sunlight – so make the most of any sunshine that comes your way.
 
I'm so down for a good walk outside on a grey day ☁️, and I think it's awesome that scientists are studying how light affects our bodies 🌞. Like, who knew that just 10k lux of light could be so powerful? 💡 It's crazy how much research has gone into understanding seasonal affective disorder, but at the end of the day, it's all about finding ways to cope with those winter blues 😔. I'm definitely trying out the light therapy lamps and getting outside in the morning – anything to stay sane during the long winter nights 🌃!
 
Autumn is literally the worst 😒, I'm so over the darkness and cold. I feel like my energy levels are totally drained all the time. I'm glad they're doing research on this stuff, it's crazy how our bodies react to the seasons. I've started trying to get outside in the morning even on grey days, it makes a huge difference. And yeah, light therapy lamps have been a lifesaver for me too 📦. I've also taken up some cosy winter hobbies like knitting and reading by candlelight, it's so relaxing. But you know what they say, there's no substitute for natural sunlight 😊. If only we could live somewhere with 365 days of sunshine! 🌞
 
I'm so over this whole seasonal thing 🤷‍♀️. Like, I get it, our bodies are all about responding to light and darkness and stuff, but can't we just chill for a sec? 😒 The idea that we need to 'beat the winter blues' or whatever is kinda annoying... like, shouldn't we just be allowed to feel a little down when it's dark outside without having to force ourselves into some kind of pseudo-therapeutic activity?

And don't even get me started on light therapy lamps 🤪. Who thought that was a good idea? It sounds like something out of a sci-fi movie, 'Hey, let's just stick our faces in front of a lamp and hope it fixes everything!' No thanks.

But you know what might actually help? Just acknowledging that it's okay to feel down sometimes and not trying to 'cure' ourselves. Like, I'm gonna go outside on this grey day and just enjoy the bleakness of it all... no bright lights or hot chocolate for me 😊.
 
Mental health is super important especially during this time of year when it gets dark and cold outside 🌫️. I think we can all relate to feeling a bit meh or lethargic in the winter months. For me, getting outside early morning, even on grey days, really helps regulate my mood 😊. It's also cool how research is showing that light exposure affects our internal body clock and genes 🤯. I've tried light therapy lamps before, they're a game-changer! And I love the idea of planning cozy rituals like hot chocolate or candlelit baths to brighten up winter days ☕️. Ultimately, it's all about finding what works for you and making the most of natural sunlight when we can get it 🌞.
 
omg this is soooo relatable!! i swear every year when autumn rolls around i start feeling like a total zombie . its like our bodies are literally programmed to be sad in the fall 🤔♀️🍂. and those tips for beating the winter blues?? genius ! getting outside first thing in the morning is literally the most important thing you can do to shake off those dark winter days ☀️💆‍♀️. and dont even get me started on light therapy lamps - my friend swears by them and her skin is always glowing 💫🌟
 
omg i'm so not surprised about seasonal affective disorder 🤕 it's like my mood changes with the seasons too lol autumn is literally the worst time for me its always grey and dark outside and i just wanna stay in bed all day 😴 but then spring rolls around and i'm like yay finally some sunshine and warm vibes ☀️💛 so yeah im gonna try gettin out first thing in mornin even on super grey days lol light therapy lamps sound like a game-changer too ill def be lookin into those 📦
 
ugh, autumn is literally the worst 🤕 i mean, don't get me wrong, coziest jumpers and all that jazz... but have u noticed how dark it gets outside? like, my mood plummets like right now 🤯 just thinking about it makes me wanna crawl back under the blankets. i've tried those light therapy lamps tho, they're a game changer ✨ i set mine up in front of my desk at work and i'm more alert in no time 🕒️ what's ur fave way to beat the winter blues tho?
 
The government's response to seasonal affective disorder (Sad) is a perfect example of where our public health policy falls short 🤔. I mean, think about it - with all the money they spend on infrastructure and transportation, why can't we have better access to natural light therapy? 🌞 It's not like we need fancy lights or anything... just some decent sunlight would do the trick! 💡 And don't even get me started on our healthcare system - if you're feeling down in the dumps, what are your options besides cognitive behavioural therapy? 🤝 Why can't we have more mental health resources and support? It's not like it's a matter of personal responsibility... 🤷‍♂️
 
I wonder if we can still get that warm glow from candles and fireplaces even on cloudy days? 🤔💡 I've noticed how much better I feel when I'm out in nature, but it's hard to replicate that at home, especially during the darker months. What do you think about using light therapy lamps with a color filter – does anyone have experience with those?

I also heard that some people find listening to uplifting music or podcasts really helps lift their mood during winter. Has anyone tried using ASMR for that? 🎧 It sounds like it could be a nice way to relax and focus on something other than how dark and gloomy the weather is.

It's crazy to think about how much our bodies are affected by light exposure – I mean, who knew there were so many genes involved! 😱 What do you guys think would happen if we all just stopped using screens before bed for a month? Would our brains even adjust that quickly?
 
idk why ppl are always complaining about winters lol they're not all bad! have u ever tried winter solstice festivals? its like a vibe 🌞️ u get to enjoy the longest night of the year w/ cozy decorations, warm drinks & good company 😊 plus, the days may be dark but theres still so much to explore in nature - go for a hike or somethin, u might discover some hidden gems ❄️ besides, if u r feelin sad, just watch some winter-themed movies all day or try out that hot chocolate recipe uve been meanin to make 🍫
 
ugh i totally get why ppl r like "just stay in bed" during winter lol 4 me tho its all about finding those tiny moments of joy like lighting a candle or drinkin hot chocolate w/ a good book 10k lux light lamps r a lifesaver btw cant stress that enough
 
😔 I feel for people who struggle with SAD during the winter months. It's like our bodies are just going through this natural reset, but it can be super tough. 🌞 Trying to get outside in the morning is a great idea - even on cloudy days, some sunlight is better than none! And have you tried waking up an hour earlier? I know it sounds crazy, but trust me, it makes a difference for me and my kiddos during the school year. We get our morning sunlight in before the chaos begins, and it helps us feel more awake and focused. 💡
 
😒 I'm not surprised they're still finding out what's behind seasonal affective disorder after 2k years... it's just common sense, right? 🤷‍♂️ Like we haven't noticed our moods dip with shorter days for centuries. And now they're telling us to "get outside" first thing in the morning? Easy for them to say, I've got work and responsibilities. Not everyone can just up and leave their job to chase some natural sunlight... 💁‍♀️
 
autumn blues got me down 😔 i swear taking a walk outside as soon as the sun rises makes all the difference 🌞 i dont need fancy light therapy lamps or anything, just some fresh air and nature to reset my mood 🌿👍
 
Winter is such a drag 😴🌧️ I swear, as soon as the days start getting shorter, I'm already feeling meh about everything 🤕. Like, I get it, our bodies are basically programmed to respond to light exposure and all that jazz, but can't we just have some decent sunlight around here? 🌞 It's crazy how much research is being done on seasonal affective disorder, though - did you know ancient Chinese texts were already talking about this stuff 2k years ago? 🙏 Those "retire early and get up with the sunrise" tips are actually kinda genius 😊. Bright light therapy is definitely a game-changer for me, but I also love trying out those cosy winter pleasures like hot chocolate or reading by candlelight 🍫📖.
 
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