I had this problem/worry a couple of years ago as well. The things I was doing wrong...

1) Didn't get my hair cut enough. I was going more than 8 weeks between hair cuts because
I was worried about losing my hair. Healthy hair breaks off less (especially at the root).

2) Wasn't taking enough Folic Acid.

3) Too much stress.

4) Not having enough Iron in my diet. I don't eat red meat and probably not enough spinach.

5) Fashion head bands, pulling my hair back in a pony tail, hats while running, head bands under my bike helmet.

*Now that was just me, I would suggest going to your doctor or hair stylist and asking their professional
opinion. Those hair stylists are experts too. I certainly pay her enough to get some advice out of her :)

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Heather Sweet
http://thesweetsadventure.blogspot.com/