Dark therapy has also been tried (in combination with bright light therapy, etc.) for other conditions where seasonal exacerbation of symptoms are notable, such as nocturnal asthma and associated depression, migraine, dyssomnia, chronic fatigue syndrome, fibromyalgia[REF] and seasonal affective disorder (SAD).
Melatonin is preventative in cancer, and supportive of bone metabolism, immune function and detoxification [REF].