A new study has revealed that exposure to tablets’ and smartphones’ blue light can dramatically increase the risk of prostate and breast cancer among heavy users. The risk is higher in people that use the devices at night.
University of Exeter researchers found that the blue light from screens can double the risk of prostate and breast cancer.
Past studies have shown that exposure to the blue light can severely disrupt the body clock, with people using mobile devices before bedtime having a hard time falling asleep.
The new study also found that the blue light-related changes affecting the hormonal system can lead to cancer. It is worth noting that we are exposed to blue light even outdoors from street lights as well.
Study authors reported that blue light exposure can boost cancer risk. The study involved 4,000 participants.
Nighttime Exposure To Blue Light can Up Cancer Risk
Researcher Alejandro Sánchez de Miguel, MD, insisted that humans are built to enjoy light during daytime and darkness during nighttime. People living in cities have a higher risk of having their body clocks disrupted by the artificial blue light.
Researchers claim that they found a “strong link” between nighttime blue light exposure and cancer. As a follow-up, they plan to further analyze the association between nighttime blue light and risk of cancer.
Blue light is the No. 1 suspect in cancer cases involving nightshift workers worldwide. The light severely disrupts the body’s levels of melatonin, a hormone that keeps the body clock balanced.
Study authors believe that blue light can mess up other types of hormones which can lead to hormone-related cancers, like breast and prostate ones.
Street lights powered by LED bulbs are also a source of blue light. This type of public lighting has become increasingly common in major cities. The latest study found that participants who were exposed to blue light outdoors had a higher risk of cancer.
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