Hey, I wrote this down. Some sites, I know, say several weeks for affected memory

[beachguy in thongs]

http://emediawire.com/releases/2005/12/emw326511.htm

The nighttime use of artificial light stimulates human breast tumors according to a Dec. 19, 2005 press release from the National Institute for Environmental Health Sciences. This is the result of melatonin suppression. University scientists have invented light bulbs that do not suppress melatonin.