valohoito
Valohoito, or light therapy, is a medical treatment that uses bright visible light to influence biological processes tied to daylight exposure. In Finnish contexts, Valohoito refers to this therapy as a method to adjust circadian rhythms and mood. It is most commonly used for seasonal affective disorder (SAD), but it also supports treatment of circadian rhythm sleep-wake disorders, jet lag, and some cases of non-seasonal depression, as well as certain sleep disturbances related to shift work.
The therapy typically employs a light box that emits 2,500 to 10,000 lux of light, filtered to
Evidence supports Valohoito as an effective option for SAD, with smaller or more variable support for non-seasonal