article_snippet: The risk, which is far higher than previously believed, has prompted fresh concern about the side effects of the pills.
article_snippet: Some had only been on the pills for a few months, others for several years.
article_snippet: Eating a handful of nuts or four tablespoons of olive oil may be a more effective way at reducing risk of a heart attack, stroke or death and without the side effects.
highlights_snippet: Stains are thought to prevent the hormone insulin from working properly .
  
highlights_snippet: The risk has prompted fresh concern about the side effects of the pills .
  