thank you so much for the information..yes i did post on web md..when i am faced with something i know nothing about, i like to get as much information as possible..nice thing about the internet, i can reach ppl from all over the world..like you said, people may say things that someone has not thought of..i looked at my results and my B 12 is 616..your right, the normal range for the lab that did this is 211-911..i also have a folic acid result of >19.0..can you please tell me or direct me to a web site that can explain how melatonin affects REM and short wave sleep?..again, thank you so much for taking the time to reply..