Winter blues or seasonal affective disorder? How to cope as autumn grows darker

It starts to show at the end of September. It is dark when the alarm goes off in the morning, you find yourself craving a sweet pastry in the afternoon, and by eight in the evening the sofa is already calling. If this sounds familiar, you are not alone, because seasonal symptoms are very common during the dark time of year. The good news is that surprisingly simple measures can ease how you feel.

Winter blues are common and usually mild

Seasonal fatigue, often called the winter blues, refers to the tiredness, sugar cravings and occasional weight gain that show up in autumn and winter. It is not an illness but the body's response to having less light, which makes the internal clock start to run late. An estimated 20–30 percent of people experience symptoms like these during the dark season. For most, they ease on their own when spring brings the light back.

Seasonal affective disorder is a different matter. It involves episodes of depression that return every autumn and winter, affecting around 1–2 percent of the population. Symptoms typically begin in October, are at their worst from November to January and start to lift from late February onwards. Typical features include sugar cravings, weight gain and long but unrefreshing sleep, together with the low mood, loss of interest and exhaustion characteristic of depression.

Light is the most important remedy for the dark season

Because the symptoms stem from a lack of light, the best help is light itself. Spending time outdoors in daylight, especially in the morning, supports your internal clock, and exercise strengthens the effect of light even further. In the dark season, however, there is often so little natural light that it is not enough on its own.

That is why many people benefit from a bright light lamp. Bright light therapy means sitting in bright light for 30–60 minutes, ideally soon after waking up, with your eyes open but without staring directly into the light. The effect usually starts to show within about a week, and sugar cravings are often the first thing to ease. A dawn simulator, which gradually brightens the bedroom before your alarm goes off, can also relieve seasonal symptoms and improve sleep quality.

Bright light is safe for most people, but at first it can cause a mild headache, eye irritation or restlessness. If you have bipolar disorder or a condition affecting the retina or the lens of the eye, talk to a doctor before you start. Side effects are usually mild and temporary, and they often ease if you sit a little further from the lamp or shorten the session.

Small everyday habits keep your internal clock on time

A regular rhythm is worth its weight in gold during the dark season. Eating breakfast right after waking up and having lunch at the same time every day help your body keep track of time. Exercise that gets you out of breath two or three times a week eases seasonal symptoms and boosts the effect of light therapy, especially if you schedule it in the morning or afternoon.

It is worth adding more light to your home for the winter, and seeing friends matters even when the sofa is tempting. Withdrawing into yourself is a common symptom of the dark season, but it also deepens low mood. Even a short walk together in daylight often does more than you might expect.

There is no need to be too strict with yourself about sugar cravings, but eating regular, sufficient meals reduces the urge for carbohydrates in the afternoon. Warmth helps too, so woolly socks and a hot drink are more than just atmosphere. A small piece of chocolate will not ruin anything, as long as your daily meals stay regular.

When to talk to a doctor about seasonal symptoms

If tiredness and low mood return autumn after autumn and affect your work, relationships or ability to cope with daily life, it is a good idea to talk to a doctor. A doctor can assess whether you are dealing with the winter blues or seasonal affective disorder and help you put together a treatment plan. Alongside bright light therapy, treatment may include short-term therapy or medication, if that is appropriate for your situation.

It is also worth seeking help if your tiredness feels unusual or comes with other symptoms, because fatigue can have many causes. If your mood is very low, you feel hopeless or you have thoughts of harming yourself, go to an emergency department straight away or call the emergency number. In that situation, do not wait to get help.