Findings that blue light emitted from smartphone screens can harm people’s sleep have led companies to add blue light filters to their phones to reduce blue light. Now, according to a new research survey, blue light filters are more harmful to people’s sleep than blue light itself. The research survey was conducted by the University of Manchester. According to previous research surveys, smartphones, Blue light from TVs has been known to reduce the production of the sleep-inducing hormone melatonin. A new survey from the University of Manchester says it’s not. Researchers at the University of Manchester developed a new survey … Continue reading Blue light filters are more harmful to people’s sleep than blue light, a new survey says