exposure to light during sleep promotes breast cancer

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Groundbreaking research finding shows that exposure to light during

sleep promotes breast cancer while darkness prevents growth of tumors

 

New research conducted in the United States at the National Cancer

Institute and National Institute of Environmental Health Sciences

reveals a startling finding: Exposure to light during the hours of

sleep appears to aggressively promote breast cancer.

 

This effect is achieved due to light's ability to shut off production

of melatonin, a hormone produced by the pineal gland. This hormone,

which is naturally produced by the body during the hours of darkness,

is known to be a strong immune system booster. Its presence also

impedes the growth of cancer tumors by as much as 80 percent,

according to research findings.

 

To determine the effect of light-moderated hormones on cancer tumors,

scientists grafted human breast cancer tumors onto rats and infused

the tumors with blood drawn from adult women. Blood taken from women

exposed to artificial light sources at night actually accelerated the

growth of the breast cancer tumors, but blood from women who slept in

the dark was found to halt the growth of the tumors by 80 percent.

 

Lead researcher Dr. David Blask characterized it as, " ...the first

proof that light is indeed a risk factor for cancer. " The research may

also help explain why night shift workers (such as nurses and flight

attendants) are up to 60 percent more likely to be diagnosed with

breast cancer.

 

" Breast tumors are awake during the day, and melatonin puts them to

sleep at night, " adds Dr. Blask.

 

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