Sleep scientists and those trying to help insomnia sufferers to get a better night’s sleep have long sung the praises of creating the correct sleep environment, and sleeping in a totally darkened room are always part of the long list of sleep hygiene issues that can be controlled to great advantage. Another light-related issue has been the blue light that emanates from televisions, e-readers and tablets, as it has been proven that they reduce the production of melatonin and disrupt the sleep cycle.
Now a study out of Tulane University School of Medicine is strengthening that argument, indicating that exposure to any kind of light at night actually shuts down nighttime production of melatonin and makes breast cancer therapies less effective. The group specifically looked at the impact that light has on the effectiveness of tamoxifen, a popular breast cancer drug, and found that it rendered the therapy of little use. Continue reading