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Night-time exposure to blue light associated with increased risk of colorectal cancer

Night-time exposure to blue light associated with increased risk of colorectal cancer

Blue light has become an increasingly common component of urban outdoor lighting. But how does it impact our health? A team led by the Barcelona Institute for Global Health (ISGlobal), a center supported by the "la Caixa" Foundation, has conducted the first study of the association between night-time exposure to outdoor artificial light and colorectal cancer. The findings, published in Epidemiology, show that exposure to the blue light spectrum may increase the risk of this type of cancer.