Thu 18 Jun 2009
Hair Loss and Thinning from Crash Diet Weight Loss?
Category: Causes of Hair Loss , Common Questions , General Hair Loss TopicsThis insightful information was posted on our hair restoration forum by Dr. Timothy Carman of La Jolla, CA, who is recommended on the Hair Transplant Network.
Recently, I lost about 40 pounds of muscle and fat due to a crash diet. I know they’re not good, but I was very overweight and was tired of being laughed at. A few months after my diet, I started noticing hair loss, including brittle hair on my legs and scalp especially around the nape. I went to a doctor but am still waiting for the blood test results.
During the crash diet, I severely limited my caloric intake and didn’t eat much if any protein. Also, afterwards, i had two intestinal infections and thinning hair. I don’t know if my hair los has anything to do with the crash diet or infections. I am very worried about my hair, please help.
What you are describing is classic for symptoms of telogen effluvium - which refers to a temporary hair shedding related to some type of “stressor” - in your case, caloric restriction or “crash diet”.
The natural hair growth cycle as it relates to this, and as observed when we perform hair transplants, is that, after the “stressor”, the follicles goes into a resting phase that lasts three months. Also, this “three month window” is also a pertinent time line one sees for the onset of the shedding period as well. Hence, what we do to our system to “stress” it begins to show up in three months. Conversely, when we “correct” or remove the stressor (in your case resume normal eating patterns, sleep, etc.) it will take another three months to begin to see the hair regrowth of that change. As hair grows slowly (about 1 cm/month) it takes additional months to really appreciate a change for the better.
I have had a number of balding patients who recently have either seen other local hair restoration doctors for consultations, or who have had a hair transplant procedure in the past and now have lost more hair. A common theme has been that they were told by other consultants that they weren’t going to experience more hair loss.
Little boys and girls recognize baldness at a very young age. In fact, kids can be brutally honest. “You’re bald Grandpa”, you might have said to your grandfather when you were a child while looking at your reflection in his polished scalp.
Iron deficiency is a real cause of hair loss. I have seen several cases of iron deficiency as a causative factor for alopecia in women. When I see women for hair loss, one of the things I investigate, along with other blood tests, is their iron levels. For men, a blood work up is rare, however, if their history and examination are not consistent with androgenetic alopecia, then I will investigate further.