How does the organs start deteriorating when you get older? – Secondary 11

Question: How does the organs start deteriorating when you get older?
- Keywords:
  age,
  organ
Asked by ells8 to Kate, Mark U, Tess, Yue, Sam, Pete, Ou, Jonathan, David on 1 May 2012. This question was also asked by ellascientist.
- Yue Zheng answered on 1 May 2012:
  
  Hi Ells8!
  when we get older (although you don’t have to worry about it for the time being), the basic component of the body, cells, start to die. More importantly, they lose the ability to repair and replace the dead ones. The body begins to be “worn-out” in a way…

Question: How does the organs start deteriorating when you get older?