Look Who it Was Random video

Breast cancer: Nighttime lighting may increase risk of breast cancer in young women - TomoNews

3,075 views · Published 22 August 2017 · 5:58 · Indexed 20 October 2026

Channel: TomoNews US · 2017 · News & Politics

Watch on YouTube

CAMBRIDGE, MASSACHUSETTS — New research by the Harvard Medical School has found a possible link between exposure to nighttime light and breast cancer in younger women who smoke.

Previous studies have shown that exposure to light at night may lead to decreased levels of melatonin, a hormone made by the body's pineal gland. This can disrupt circadian rhythms and lead to an increased risk of breast cancer.

The study tracked data from nearly 110,000 women in the U.S. between 1989 and 2013. The results shows the risk of breast cancer in premenopausal women who smoke or who used to smoke increases with greater exposure to outdoor nighttime light. However, older women and those who had never smoked did not seem to be affected by the lighting.

"In our modern industrialized society, artificial lighting is nearly ubiquitous. Our results suggest that this widespread exposure to outdoor lights during nighttime hours could represent a novel risk factor for breast cancer," Peter James, lead author of the study and assistant professor at Harvard Medical School's department of population medicine said in a press release.

The study also finds the link was stronger among women who worked night shifts but the authors admit further work is needed to clarify the potential mechanisms.

The study was published on August 17 in the journal Environmental Health Perspectives.
----------------------------------------­---------------------

Go to https://www.patreon.com/tomonews and become a Patron now 

TomoNews is now on Patreon and we've got some cool perks for our hardcore fans.

TomoNews is your best source for real news. We cover the funniest, craziest and most talked-about stories on the internet. Our tone is irreverent and unapologetic. If you’re laughing, we’re laughing. If you’re outraged, we’re outraged. We tell it like it is. And because we can animate stories, TomoNews brings you news like you’ve never seen before.

Visit our official website for all the latest, uncensored videos: http://us.tomonews.com
Check out our Android app: http://bit.ly/1rddhCj
Check out our iOS app: http://bit.ly/1gO3z1f

Get top stories delivered to your inbox everyday: http://bit.ly/tomo-newsletter
See a story that should be animated? Tell us about it! Suggest a story here: http://bit.ly/suggest-tomonews

Stay connected with us here:
Facebook http://www.facebook.com/TomoNewsUS
Twitter @tomonewsus http://www.twitter.com/TomoNewsUS
Google+ http://plus.google.com/+TomoNewsUS/
Instagram @tomonewsus http://instagram.com/tomonewsus

More from this channel