Hidden Harm of Smoking for Mental Health Revealed

Researchers at the Central Institute of Mental Health in Mannheim have found that smoking is linked to a higher risk of depression. A study published in BMC Public Health showed that current and former smokers are more likely to experience depressive disorders compared to people who have never smoked.

The analysis included data from nearly 174,000 individuals aged 19 to 72. The study found that the risk of depression was particularly high among people aged 40–59. A clear dose-dependent relationship was also observed: the more cigarettes a person smokes daily, the more pronounced the depressive symptoms.

Conversely, quitting smoking was associated with improvements in mental health. The longer someone had been smoke-free, the lower their risk of depression and the further back in time their last depressive episode occurred. Later initiation of smoking was also linked to a later onset of depressive symptoms.

The researchers emphasize that the study does not prove a direct causal link, but the findings support the importance of smoking prevention and cessation programs. Reducing tobacco consumption may benefit not only physical but also mental health, and future long-term studies are expected to clarify the underlying mechanisms.

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