Depression isn’t just a winter problem: What to know about summer SAD

Understanding Seasonal Affective Disorder Beyond Winter

While Seasonal Affective Disorder (SAD) is most commonly associated with the darker, colder days of winter, it is a serious medical condition that can also manifest during the summer months. Although summer SAD is less common than its winter counterpart, it can be just as debilitating, ranging from milder “summer blues” to incapacitating depressive symptoms.

According to research, winter SAD affects approximately 5% of the global population, while summer SAD is an atypical subtype affecting 0.57%. Unlike winter depression, which is often linked to a lack of social interaction and light, summer-pattern SAD can be triggered by environmental factors such as heatwaves and tropical nights.

Recognizing the Symptoms

Depression is a complex medical condition, and symptoms do not look the same on everyone. During a depressive episode, a person may experience a depressed mood—feeling sad, irritable, or empty—or a loss of pleasure in activities for at least two weeks.

For those experiencing summer-specific depression, symptoms often include:

• Insomnia
• Appetite loss
• Agitation
• Anxiety

These symptoms are in addition to common indicators of depression, such as poor concentration, feelings of excessive guilt, low self-worth, hopelessness, disrupted sleep patterns, and low energy. In some cases, individuals may experience thoughts of death or suicide. Because depression affects people differently based on age and sex, some may present with irritability or anger rather than traditional sadness.

Global Context and Mental Health Trends

The broader landscape of mental health shows a significant increase in the prevalence of these conditions. According to a recent analysis from the Global Burden of Disease Study published in The Lancet, approximately 1.2 billion people—about 15% of the world’s population—were living with a mental health condition in 2023. This figure represents a 95% increase in cases between 1990 and 2023.

Major depressive disorder and anxiety disorders are among the most common conditions, with cases increasing by 131% and 158% respectively over that same period. In the European Region, it is estimated that one in six people live with a mental health condition, yet only one in three people living with depression receive the necessary care. Barriers to effective treatment include a lack of investment in mental health care, a shortage of trained providers, and social stigma.

Management and Seeking Help

For those struggling with summer-related depressive symptoms, experts suggest that maintaining a consistent routine, prioritizing sleep, and avoiding extreme heat may help ease discomfort. However, because depression is a serious health matter, professional intervention is often necessary.

In severe cases, it is recommended to seek medical attention, says Adam Borland, a clinical psychologist at the Cleveland Clinic.

Effective treatments for depression are available and generally include a combination of psychological treatment (talk therapy) and medications, such as antidepressants. Psychological treatments focus on teaching new ways of thinking and coping, and can be conducted one-on-one or in groups. Because depression can be a long-term condition, health providers emphasize that seeking help at the earliest sign of a problem is a vital step in managing symptoms. If you or someone you know is experiencing symptoms, consulting a healthcare or mental health provider is the recommended course of action to receive a proper diagnosis and treatment plan.