(WWJ) — New research shows how light and dark could mean the difference between life and death for some breast cancer patients.

Tulane University researchers have found exposure to light at night, which shuts off production of the hormone melatonin, makes breast cancer completely resistant to the drug tamoxifen.

Researchers exposed rats implanted with human breast cancer cells to either 12 hours of light followed by 12 hours of total darkness, or, exposed the animals to very dim light during the 12 hour dark phase.

They found high melatonin levels at night put breast cancer cells to sleep, by stopping their growth and making them vulnerable to tamoxifen. But when even dim lights were on and melatonin was suppressed, breast cancer cells woke up and ignored tamoxifen.

The study appears in the journal Cancer Research.


Leave a Reply

Please log in using one of these methods to post your comment:

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

More From CBS Detroit

Best Cooking Classes In DetroitLearn how to whip up some wonderful dishes while having fun!
5 Bucket List Items To Cross Off In DetroitThe “must-do” items for anyone making a trip to Detroit.

Watch & Listen LIVE