Published: 1st May 2018

The ‘blue light’ emitted from LED streetlights and commercial advertising hoardings has been linked to an increase in the risk of breast and prostate cancer. The study from Barcelona Institute for Global Health (ISGlobal) and involving the University of Exeter found that participants living in large cities with heavy exposure to LED lighting at night had double the risk of prostate cancer and 1.5 times higher risk of breast cancer. This was compared to populations with less exposure to blue light. The study, published in Environmental Health Perspectives, includes medical and epidemiological data of more than 4,000 people between 20 and 85 years of age in 11 Spanish regions. It particularly examined Madrid and Barcelona. In the first study of its kind, outdoor levels of artificial light were evaluated based on night-time images taken by astronauts aboard the International Space Station. Little is known about how environmental factors affect breast and prostate cancer. The … (To read the full article, subscribe below)