As winter approaches and the clocks fall back, some of us may be missing the lighter evenings, while others could be severely affected by seasonal affective disorder (SAD). In fact, around 10 million of us are affected by SAD, which is a form of depression that affects us in the winter months.
SAD is often caused by low sunlight levels which can impact our serotonin and melatonin production, leading to lower mood and increased sleepiness. From anxiety at bedtime to daytime grogginess, the disorder can leave you feeling tired but unable to sleep at night.
