if" alt="Comments" /><a href="http://www.telegraph.co.uk/science/science-news/10056901/Womens-immune-systems-hold-the-secret-to-longer-life.html#disqus_thread" dsqid="10056901">Comments</a>
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A new study has shown that levels of key white blood cells, which are 
  responsible for fighting off infections, become lower in men as they get 
  older compared to women. 
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