Seasonal Affective Disorder (SAD) is more common than many people realise, and symptoms can appear as daylight decreases. While the exact cause isn’t fully understood, reduced exposure to natural light is thought to play a major role. Key symptoms to look out for: • Persistent low mood and reduced interest in usual activities • Fatigue, low energy or feeling unusually lethargic • Sleeping more than usual or struggling with sleep • Changes in appetite or reduced sex drive • Irritability, feelings