Why does hair stop growing and fall out when you are old ?

Question: Why does hair stop growing and fall out when you are old ?
- Keywords:
  ageing,
  grow,
  growing,
  hair
Asked by nav1 to Indi on 15 Mar 2012.
- Indi Ghangrekar answered on 15 Mar 2012:
  
  Hi nav1, I’m not really sure, I haven’t thought about it before! It definitely has a genetic element to it though – that’s why it does happen to some but not to others!

nav1 commented on 15 Mar 2012:

Thanks for answering me question !

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- Indi commented on 18 Mar 2012:
  
  You’re welcome 🙂
  
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Question: Why does hair stop growing and fall out when you are old ?