Royal commission to study link between late nights and cancer

Geoffrey Lean,Environment Editor
Saturday 15 December 2007 20:00 EST
Comments

Your support helps us to tell the story

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.

The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.

Your support makes all the difference.

Evidence that staying up late and sleeping with the light on can cause cancer is to be examined by a royal commission.

The evidence, reported in The Independent on Sunday 18 months ago, also casts further doubt on the safety of radiation from mobile phones and electric power lines. The Royal Commission on Environmental Pollution is to examine the impact of artificial light on health as part of a short study of its effects on the environment to be launched early next year.

The International Agency for Research on Cancer, the foremost international body on the disease, is considering officially labelling night-shift work as a "probable" human carcinogen, after a study found that nurses and flight attendants are more likely to develop breast cancer.

The study is only the latest among many to make the link between exposure to light at night and the disease, which affects one in 10 women and whose incidence is doubling every two decades. Besides showing that it is 60 per cent more common among night-shift workers, they have demonstrated a similar rise among women who stay up late more than two or three times a week. Conversely, totally blind women are only half as likely to contract it.

Groundbreaking research by the National Cancer Institute and National Institute of Environmental Health in the United States grafted human breast cancer tumours on to rats and infused them with blood taken from women during the day, in the early hours of the morning and after being exposed to light at night. The blood taken in darkness slowed the growth of the tumours by 80 per cent, while that taken after exposure to light accelerated it.

Studies have shown that the light at night interferes with melatonin, "the hormone of darkness" which is secreted by the pineal gland at night and both impedes cancers and boosts the immune system. Electromagnetic radiation, given off by power lines, mobile phones and Wi-Fi, has been found to have a similar effect.

Professor Denis Henshaw of Bristol University said that the radiation "suppresses melatonin in the same way as light does".

Join our commenting forum

Join thought-provoking conversations, follow other Independent readers and see their replies

Comments

Thank you for registering

Please refresh the page or navigate to another page on the site to be automatically logged inPlease refresh your browser to be logged in