Your diet could be affecting your hair growth but not as much as you may think. The condition of your hair plays a more important role, and it could be a result of your genes. Unfortunately if it’s a problem that has been this way your whole life then that’s pretty much the answer to your question. You could try hair extentions, a good multi-vitiman and changing your diet and lifestyle, but chances are (unfortunately) that you won’t find the results you are looking for as easily, especially if this problem has been life-long. I hope this works for you.