The UK has experienced one of the hottest Junes on record, with temperatures reaching nearly 40°C this week. As the heat persists, Google searches for 'seasonal affective disorder' have surged by 285% in the past 24 hours, reflecting growing concern over extreme heat's impact on mental wellbeing.
What Is Summer SAD?
Seasonal affective disorder (SAD) is a type of depression that typically occurs in winter but can also strike in summer. Dr Corné Hurter, Medical Director for Services and Delivery at AXA Health insurance, explains that severe heatwaves and high humidity are significant triggers for what is known as 'summer SAD'. Although less common than winter depression, approximately 10% of those with seasonal mood disorders experience summer SAD.
The exact cause remains unknown, but the condition is strongly linked to sunlight exposure. Intense heat, social pressure to be active, disrupted sleep and routines, physiological stress, disruptions in brain chemistry, and physical confinement can all trigger summer SAD.
Symptoms to Watch For
Dr Hurter outlines three key symptoms of summer SAD:
- Heightened emotions: Individuals may feel more tearful, irritable, anxious, or angry than usual, with negative thoughts and feelings of despair or guilt.
- Decreased energy levels: People often struggle to get out of bed and feel unusually lethargic due to heat-disrupted sleep. Routine tasks may feel exhausting, and there is a strong desire to sleep more.
- Changes in appetite: Increased cravings for comfort foods like chocolate and high-carb snacks can spike blood sugar and insulin, leading to low energy. Eating and sleeping more than usual are common signs.
Tips for Managing Summer SAD
Dr Hurter recommends three strategies to manage symptoms:
- Eat a vitamin-rich diet: Foods like oatmeal, egg-white omelettes, lean chicken or turkey, popcorn, peanut butter, and nuts can stimulate serotonin levels. Avoid caffeine, which suppresses serotonin and can worsen symptoms.
- Establish a sleep routine: Create a calm sleeping environment with a wind-down routine (e.g., reading), limit screen time, use a fan, and avoid caffeine to improve sleep quality.
- Stay cool and hydrated: Close blinds or curtains during peak sunshine hours and drink plenty of water. This is especially important for those taking SSRIs or antidepressants, which can lower heat tolerance and increase sweat production.
The NHS notes that SAD is a type of depression, with treatments including antidepressants, talking therapies, and light therapy. While winter SAD is more common, summer SAD can be equally debilitating. Dr Hurter urges the public to recognize these signs and take proactive steps to protect their mental health during heatwaves.
