For many, autumn's darkening days bring more than the usual urge to break out the woolly jumpers and crank up the central heating. As the evenings close in and the mornings grow murky, a heavy sense of sadness can settle in.
The link between seasons, mood, and vitality has long been observed, even if it wasn't formally recognised by psychiatrists until the 1980s. Ancient Chinese text, the Yellow Emperor's Classic of Medicine, described how to adapt to the changing seasons back in the 3rd century BC. Its advice remains eerily relevant today: "retire early and get up with the sunrise", keeping one's desires and mental activity quiet and subdued.
Today, scientists are rediscovering just how closely tuned our biology is to the seasons. According to Dr Cathy Wyse, a chancellor's research fellow at the University of Edinburgh, this understanding has improved significantly over the past decade. The key breakthrough was realising that seasonal changes in human mood are probably an integral part of our physiology - not just a result of external factors.
Large-scale studies like the UK Biobank have made it possible to track seasonal patterns across hundreds of thousands of people over many years, something previously impossible. These findings suggest that even without clinical depression, many people experience a milder seasonal dip in mood, known as subsyndromal Sad or "the winter blues". One in five people are affected by this phenomenon, although only 2% will go on to develop full-blown Seasonal Affective Disorder.
Researchers have discovered fluctuations in the expression of thousands of genes and changes in blood composition across the year. Dr Wyse recently presented a study using four years' worth of UK Biobank sleep data from half a million people, which found that in winter, people tended to sleep longer and were more likely to experience sleeplessness.
So what's driving these seasonal changes? The answer lies in light - or rather, the lack thereof. Light regulates our internal body clock, influencing hormone release, alertness, and mood. When daylight is scarce, especially combined with too much artificial light at night, this rhythm can become disrupted.
Yet, while light therapy remains the gold standard for treating Seasonal Affective Disorder, cognitive behavioural therapy tailored to this condition can be just as effective. By reframing one's relationship with winter, rather than simply managing symptoms, people can reclaim some joy from the darker months.
So how can you beat the winter blues? Try getting outside as early as possible on grey days, or sit in front of a light box emitting around 10,000 lux - roughly equivalent to outdoor light on an overcast summer's day. Check your sleep habits and get outside for at least an hour a day, ideally combining it with something enjoyable. Plan winter pleasures, such as cosy rituals or social activities, and know when to seek help if symptoms persist.
The link between seasons, mood, and vitality has long been observed, even if it wasn't formally recognised by psychiatrists until the 1980s. Ancient Chinese text, the Yellow Emperor's Classic of Medicine, described how to adapt to the changing seasons back in the 3rd century BC. Its advice remains eerily relevant today: "retire early and get up with the sunrise", keeping one's desires and mental activity quiet and subdued.
Today, scientists are rediscovering just how closely tuned our biology is to the seasons. According to Dr Cathy Wyse, a chancellor's research fellow at the University of Edinburgh, this understanding has improved significantly over the past decade. The key breakthrough was realising that seasonal changes in human mood are probably an integral part of our physiology - not just a result of external factors.
Large-scale studies like the UK Biobank have made it possible to track seasonal patterns across hundreds of thousands of people over many years, something previously impossible. These findings suggest that even without clinical depression, many people experience a milder seasonal dip in mood, known as subsyndromal Sad or "the winter blues". One in five people are affected by this phenomenon, although only 2% will go on to develop full-blown Seasonal Affective Disorder.
Researchers have discovered fluctuations in the expression of thousands of genes and changes in blood composition across the year. Dr Wyse recently presented a study using four years' worth of UK Biobank sleep data from half a million people, which found that in winter, people tended to sleep longer and were more likely to experience sleeplessness.
So what's driving these seasonal changes? The answer lies in light - or rather, the lack thereof. Light regulates our internal body clock, influencing hormone release, alertness, and mood. When daylight is scarce, especially combined with too much artificial light at night, this rhythm can become disrupted.
Yet, while light therapy remains the gold standard for treating Seasonal Affective Disorder, cognitive behavioural therapy tailored to this condition can be just as effective. By reframing one's relationship with winter, rather than simply managing symptoms, people can reclaim some joy from the darker months.
So how can you beat the winter blues? Try getting outside as early as possible on grey days, or sit in front of a light box emitting around 10,000 lux - roughly equivalent to outdoor light on an overcast summer's day. Check your sleep habits and get outside for at least an hour a day, ideally combining it with something enjoyable. Plan winter pleasures, such as cosy rituals or social activities, and know when to seek help if symptoms persist.