article_snippet.sent: Research has already shown that the intense levels of 'blue light' emitted from modern gadgets can cause a variety of health complaints, ranging from sleeping and eating problems to headaches and even cancer.
article_snippet.sent: According to Dr Sanchez-Ramos, modern LED screens, produced from about 2007 onwards, emit up to five times as much blue light as older technology.
article_snippet.sent: The harmful effects of exposure to gadgets is linked to the high levels of 'blue light', also known as 'short wavelength light', that is emitted by modern screens.
article_snippet.sent: In particular, blue wavelengths, which are emitted by most electronic devices produced from 2007 onwards, have been shown to have 'adverse health effects'.
article_snippet.sent: Modern LED screens emit up to five times as much blue light as older technology.
article_snippet.sent: And experts at Chicago's Northwestern University found a link between cancer and the use of gadgets that emit blue light in the evenings and by night.