Light therapy -- exposure to artificial light -- can decrease depressive symptoms and normalise circadian rhythms among cancer survivors finds a study. Depressive symptoms are common among cancer survivors' even years after treatment has ended said Heiddis Valdimarsdottir from Icahn School of Medicine at Mount Sinai US. This interferes with overall quality of life and puts survivors at risk for poor outcomes including death he added. Most patients face some degree of depression anxiety and fear when cancer becomes part of their lives. According to the American Cancer Society one in four people with cancer have clinical depression. Researchers randomly
