Feeling a bit flat, sleepy and less sociable when the days get short is common and usually passes; that’s the winter blues. If the low mood lasts most of the day, nearly every day, for two weeks or more, keeps you from working or enjoying anything, and comes back at the same time each year, it may be seasonal affective disorder (SAD), a form of depression that responds well to treatment.
Morning daylight, a steady sleep schedule, regular exercise and staying in touch with people help both. Talking therapy, light therapy and antidepressants are there when self-help isn’t enough. And if you’re having thoughts of ending your life, call Tele-MANAS on 14416 now, or 112 in an emergency.
Winter blues vs seasonal depression: what’s the difference?
The difference is how much it gets in the way of your life. Cleveland Clinic describes feeling somewhat down in the colder months as normal, and says that unlike the winter blues, SAD affects your daily life, including how you feel and think.
| Winter blues | Seasonal depression (SAD) | |
|---|---|---|
| Mood | A bit low or lazy, but you still enjoy good moments | Low or empty most of the day, nearly every day |
| Daily life | You get through work, studies and family duties | Work, studies or relationships start to suffer |
| Sleep and appetite | Want a little more sleep and comfort food | Oversleeping, strong carb cravings, weight gain |
| Social life | Prefer staying in some evenings | Pulling away from friends and family |
| Pattern | Comes and goes | Returns in the same season for at least two years running |
| What helps | Daylight, activity, routine | The same, plus therapy, light therapy or medicine |
The US National Institute of Mental Health (NIMH) describes SAD as depression with a recurring seasonal pattern, with symptoms usually lasting about four to five months a year. For a diagnosis, the episodes need to have happened in a particular season for at least two years in a row. The winter type often brings three things that are less typical of other depression: oversleeping, overeating with carbohydrate cravings, and social withdrawal.
Signs that it’s more than a passing low
The NIMH’s depression guide says a diagnosis needs symptoms most of the day, nearly every day, for at least two weeks. Watch for:
- a sad, anxious or “empty” mood that doesn’t lift
- losing interest in things you used to like, such as cricket, music, cooking or meeting friends
- feeling hopeless, guilty or worthless
- tiredness and feeling slowed down, even after a long sleep
- trouble concentrating or making decisions at work or in exams
- sleeping much more than usual, or waking too early
- changes in appetite or weight
- irritability, or snapping at family over small things
- aches, headaches or stomach trouble with no clear physical cause
- thoughts of death or suicide
Some physical health problems can also cause tiredness and low mood, so a doctor may suggest blood tests before deciding it’s depression.
How common is SAD, and does it happen in India?
SAD is a well-recognised condition, but how common it is depends heavily on where you live. Cleveland Clinic estimates that about 5% of US adults have SAD, and 10% to 20% get a milder form of winter blues. A review of epidemiological studies in Acta Psychiatrica Scandinavica found prevalence estimates ranging from 0% to 9.7% across 20 studies, with higher rates at more northern latitudes. Cleveland Clinic notes it’s more common in women and in people aged 18 to 30.
India has much less research. Days here don’t shorten as dramatically as in Europe or North America, so classic winter SAD is thought to be less common, but it isn’t absent:
- A study of 93 people with recurrent mood disorders at a centre in north India (latitude 26°45’N), published in the Journal of Affective Disorders (1998), found 18 had a seasonal pattern. The authors stressed this was a select group and doesn’t tell us how common SAD is in India.
- A survey of 1,370 university students comparing Bologna in Italy with Kalyani in West Bengal, in Comprehensive Psychiatry (2012), found Italian students reported more winter SAD while Indian students reported more summer-pattern SAD, which the authors linked to India’s summer heat.
So there’s no reliable national figure. If your mood dips every winter, especially if you live in the north, work indoors from dawn to dusk, or spend weeks under smoggy grey skies, your experience is real even if the Indian data is thin.
What helps: light, routine, exercise and sleep timing
Get morning light
Less daylight shifts your body clock, which can throw off mood, sleep and hormones. The NHS advises spending as much time in natural daylight as you can. In practice:
- Step outside within an hour or two of waking: tea on the balcony, a walk to the market, or the school drop-off on foot.
- Sit near a window at work, and take a short outdoor break around midday.
On very high pollution days, a short spell on the balcony or by an open window still gives you light without a long exposure to bad air.
Keep a fixed sleep and wake time
The NHS recommends going to bed and waking up at consistent times, and avoiding phones and screens right before bed. Oversleeping on weekends feels good but tends to make Monday mornings harder. If late nights have become a habit, our piece on the warning signs that sleeping late is harming you is worth a read, and these tips to improve sleep quality are a good place to start.
Move every day, ideally outdoors
The NHS includes regular exercise in its self-help advice for SAD. A brisk 30-minute walk in daylight combines two things that help. Yoga, cycling, badminton or a home workout all count on days when the air quality is poor.
Stay connected and keep doing things
Withdrawal feeds low mood. Keep your usual plans, even when you don’t feel like it: call a friend, go to the family dinner, keep your weekly class. This “do it first, feel better later” idea is the core of behavioural activation, a technique used in therapy for SAD. Go easy on alcohol, which the NHS also advises avoiding when you’re low. For more on day-to-day ups and downs, see our article on why mood swings happen.
When therapy, light therapy or medication helps
If self-help hasn’t made a difference after two weeks, or your symptoms are already affecting work or home, see a doctor or a mental health professional. Treatment works, and the NHS notes that many people need it each winter to stop symptoms returning.
- Talking therapy. Cognitive behavioural therapy (CBT) helps you spot and change the thought patterns and habits that keep low mood going. The NIMH describes a SAD-specific version, CBT-SAD, usually run as two group sessions a week for six weeks.
- Light therapy. This means sitting near a special light box, usually 10,000 lux, every morning. The NIMH describes sessions of about 30 to 45 minutes; Cleveland Clinic says many professionals recommend 15 to 30 minutes and that morning sessions seem to work best. Side effects can include eyestrain, headache and trouble sleeping. Speak to a doctor first, especially if you have an eye condition or take medicines that make you sensitive to light. An ordinary bright bulb is not the same thing.
- Antidepressants. These are prescribed when depression is moderate or severe, or when therapy alone isn’t enough. According to the NIMH, they usually take 4 to 8 weeks to work. The NIMH also notes that an extended-release form of bupropion, taken daily from autumn to early spring, can prevent seasonal episodes from returning in many people. Talk to your doctor before starting or stopping any medicine.
What about vitamin D? The NIMH says studies testing it as a treatment for SAD have produced mixed results. It’s worth correcting a deficiency if you have one, but it isn’t a replacement for proper treatment of depression.
Free help is available in India. Tele-MANAS, the Health Ministry’s mental health helpline, is free and runs 24 hours a day. Call 14416 or 1-800-891-4416 to talk to a trained counsellor in your language, who can refer you on to specialist care if needed.
When to get help urgently
Don’t wait for spring if you notice any of these in yourself or someone close to you:
- thoughts of suicide or self-harm, or talking about wanting to die or being a burden
- making plans, giving things away or saying goodbyes
- not eating or drinking, or not getting out of bed for days
- being unable to work, study or look after yourself or your children
- heavy drinking or drug use to cope
- hearing or seeing things others don’t, or very unusual beliefs
- very high energy, little need for sleep and racing thoughts after a low spell, which needs prompt review
If you’re thinking about ending your life, call Tele-MANAS on 14416 now, or 112 if you’re in immediate danger, or go to the nearest hospital emergency department. If someone you know is at risk, stay with them, remove obvious means of harm if it’s safe to do so, and get help together.
Frequently asked questions
Can you get seasonal depression in a warm country like India?
Yes, though the research is limited. A north Indian study found seasonal patterns in some people with recurrent mood disorders, and a student survey suggests summer-pattern depression may be more common in India than the winter type.
Do I need a light box?
Not necessarily. Start with outdoor morning light, regular sleep times and exercise. If your symptoms are significant, discuss a light box with a doctor; it isn’t suitable for everyone.
Will it go away on its own in spring?
Winter-pattern SAD usually eases as the days lengthen, but it often comes back the next winter. Treating it means you don’t lose four or five months every year.
Is it just laziness?
No. Depression is a medical condition that affects energy, sleep, appetite and thinking. Telling yourself to “snap out of it” doesn’t work; daylight, routine, therapy and, if needed, medicine do.
This article is for general information and is not a substitute for advice from a doctor. If you have symptoms or a health condition, please consult a qualified healthcare professional.