This summary of the scientific Opinion on 'Potential risks to human health of Light Emitting Diodes (LEDs)' by the Scientific Committee on Health, Environmental and Emerging Risks (SCHEER) covers some of the Opinion's key points and goes more in depth than the one-page factsheet on the same topic, also available on this website. An abstract and a shorter but more technical summary are also included in the scientific Opinion itself. Information about data and methodology and the science behind LEDs and eye and skin optics are also found in the Opinion and are not covered here.