article_snippet: They took it for three to ten years.
article_snippet: Lead researcher Dr Henry Boardman, from Oxford University, said: ‘The evidence Lead researcher Dr Henry Boardman, from Oxford University have provides some support for the so-called “timing hypothesis” but Lead researcher Dr Henry Boardman, from Oxford University should bear in mind the size of this effect.
article_snippet: The latest findings, published in the Cochrane Library international database, came to a similar conclusion.
article_snippet: However, this was inconclusive.
article_snippet: Dr Boardman said: ‘The evidence adds to a large bank of evidence that helps GPs advise a large bank of evidence that helps GPs patients. 
article_snippet: The review looked at almost 4,000 investigations worldwide, including two large American studies which recruited women as old as 79.