Physical exercise. In clinical trials with people with seasonal depression, exercise has been shown to be as (if not more) effective than light therapy in relieving their symptoms.^11,12. Two other studies carried out in Finland evaluated the effectiveness of a treatment combining light therapy and exercise physical^13,14. In one of them¹³, which took place between November and January, the group consisted of 120 employees working inside. Physical training took place 2 to 3 times per week, in a space illuminated by a light of 2 lux to 500 lux for one group, and by normal light (4 lux to 000 lux) for the other group. . Exercise in bright light had a more positive effect on general mental health, social functioning, depressive symptoms, and vitality than simple exposure to this bright light. In addition, the exercise practiced under normal lighting had a positive effect only on the vitality of the participants.

Research

5-HTP. 5-HTP is a precursor amino acid for serotonin. Low levels of serotonin in the brain could contribute to seasonal depression¹. Some preliminary studies suggest that taking 5-HTP supplements may be beneficial for people who do not respond to light therapy^1,18,19.

melatonin. Preliminary study of 10 patients finds melatonin supplements may ease symptoms in some people if taken in the afternoon²¹ (they would be ineffective when taken early in the morning or late evening²²). Nonetheless, the evidence is in the early stages and the long-term effects of melatonin supplements on the body are still unknown.

Wort (Hypericum perforatum). While St. John’s Wort in treating depression is clear, very few studies have evaluated its effects on symptoms of seasonal depression.^15-17 .