I Saw Hair Loss After Dieting, Then the Hair Regrew a Different Color and Character!

Hi,

About a year and a half ago I went on a diet and lost over 100 lbs during the course of a year. After about 6 months my hair started to thin out all over my head. I got nervous and started taking a multi-vitamin and a vitamin for healthy hair. Most of the hair I lost gradually returned but it was much darker and thicker. My natural color is light brown/blonde. The hair that grew back had a straw like texture. It was black and wiry.

I visited my family doc and a derm and both said the color change and thickening was odd. They did a full battery of blood work but it showed nothing. Now after about six to eight months of having alien hair the dark, thick, black hairs are shedding like crazy. 90% are gone at this point. What is left is the hair that is my natural color and texture. It is much thinner than usual because of the shed the past few months. I can see some light colored peach fuzz sprouting up where the dark hair fell out but that just started in the last two weeks. Luckily, I had super healthy, thick hair before this so if I style it correctly I still have coverage.

When it turned black friends asked if I colored my hair. Now that it is going back, I’m getting the same question. Docs suggested hormones. I did have a stressful year and a half. They said I could use rogaine or propecia. I didnt want to start either of those because from what I read they need to be continued for life. Very nervous about propecia especially if my hormones were out of whack naturally and have recently returned to normal on their own. I doubt that would help make things better. No doctor would say for sure it is MBP, not even a local hair transplant doc I went to a consult with. He said give it 6 months and come back. He never saw hair get thicker and black before and couldnt explain it.

Everything I’ve read about MBP talks about receding and gradual thinning. My hair went from perfect with no signs of loss or family history on either side to thin to thicker and black back and now to normal color but thin in just over a year and a half. I do not have any bald spots just my normal hairline of the past but a general lack of density because of what I lost. I’m frustrated and out of options as far as I know. I’m hoping you could offer some insight. I just want to know what I’m dealing with so I can decide on a course of action. Thanks in advance for your help.

Hair color change and texture change are not likely related to dieting, but perhaps your hair loss was “triggered” by the extreme dieting (a common condition). I can’t explain the reason for the wiry, black hairs that you’re describing. It is a little odd, and I’m sorry to say that I don’t have any further insight.

Diffuse hair loss and patterned hair loss are generally two different things. For example, if your hair loss is deemed to be telogen effluvium, then your hair will likely grow back in a year. If you have another exam (find another doctor that can give you answers after an in-person examination) and can get the MPB diagnosis, then medication like Rogaine or Propecia would be helpful. If you don’t have genetic male pattern baldness, Propecia isn’t going to help you.

You need to figure out what is going on before you can figure out how to treat it.