Seasonal depression: understanding this condition that returns each winter

Seasonal depression, also known as Seasonal Affective Disorder (SAD), affects many people when daylight hours decrease and sunlight becomes scarce. In Luxembourg, where winter brings long periods of cloudiness and short days, this condition is particularly common and often underestimated. Unlike a temporary low mood, seasonal depression gradually builds and can deeply affect sleep, motivation, energy levels and general wellbeing.

People with SAD often report unusually low energy, increased sleep, cravings for sweets or carbohydrates, difficulty waking up, and a persistent emotional heaviness. These symptoms are linked to reduced exposure to natural light, which disrupts circadian rhythms and affects serotonin and melatonin production — two essential hormones for mood and sleep regulation.

Seasonal depression is not a personal weakness. It is a biological response to environmental changes. Recognising early signs is essential to prevent symptoms from becoming overwhelming. Regular exposure to daylight, stable sleep routines, physical activity and, in some cases, light therapy, can help significantly.

For more severe cases, psychological or psychiatric support may be necessary.

Your health is our priority.

— The Vade Clinics team