Higher temperatures reduce depression, increase mania symptoms

A recent study found that higher temperatures can have mixed effects on people with mood disorders. While warmer weather may reduce symptoms of depression, it can also increase symptoms of mania. The research looked at over 6,000 adults with mood disorders between 2021 and 2023. These participants used a smartphone app to track their symptoms and provide real-time temperature data based on their locations. The study analyzed how a 1°C increase in daily temperature affected symptoms. It showed a 0.2% decrease in depressive symptoms and a 0.4% increase in manic symptoms. Spring was linked to the biggest drop in depression, with a 1°C rise resulting in a 0.5% reduction in scores. In contrast, autumn showed the most significant increase in mania symptoms, with a 1°C rise leading to a 1.1% increase. The study emphasized the importance of understanding how temperature affects mental health. It particularly highlights the need for mental health professionals to prepare for extreme heat events that could impact individuals with bipolar disorder. However, the study had some limitations. The data were limited in geographic scope, and the sample mainly included younger women with access to smartphones. Seasonal trends and potentially inaccurate reporting of some participant details may have influenced the results. The study was led by researchers from University College London and published in the Journal of Affective Disorders.