Hair loss after surgery

I was just wondering if anyone had any ideas or suggestions on hair loss after weight loss  surgery. My mom had the gastric bypass 4 months ago and is loosing her hair. I have heard this is common but I would like to know what others have done to prevent this from happening. I am scheduled for surgery on February 16 with Dr. Almanza in Tijuana and currently have very thin hair and would hate to loose any more!! Thanks in advance for any help!!

I plan on starting Biotin next week. I'm already 9 days out.  I've heard some people start taking it ahead of time.

Do you need a perscription for Biotin? 

No, it is just a vitamin.  I got mine at Wal-Mart. It is supposed to strengthen hair and nails. 

Ohhh..good to know..thank you :)

just make sure that you get in all if not more of your protein supplements in.  My mother-in-law had bypass about 5years ago and never lost any hair, but she always made sure that she got her base protein from the supplements and everything by food was extra.  good luck

Thanks for everyones comments!!

i had my surgery 10-6-09 band did all my protein vitiams and still lost hair went out and bought the shampoo sally hair supply has it ..the month before stated taken botin ..make sure u massage ur head to get the blood there ..sometimes we do all we can and it still happens ..will let you know if it all comes back ..