01/24/2026
🔵 In Tokyo, su***de attempts at metro stations dropped by 84% after the installation of blue LED lights on platforms and station entrances. The intervention was introduced as a low-cost mental health measure.
Psychologists believe blue light has a calming psychological effect, reducing impulsive behavior and emotional distress. It may subconsciously slow thought patterns during moments of crisis.
Japan has historically struggled with high su***de rates, particularly in urban transit systems. Traditional prevention methods such as barriers and surveillance are expensive and intrusive.
The blue-light initiative proved surprisingly effective without physical restriction, relying instead on environmental psychology. Similar approaches are now being studied in other countries.
Mental health experts say the success highlights how subtle design changes can save lives when combined with broader mental health support systems.