article_snippet.sent: Just two cups of coffee a day could halve the risk of breast cancer returning in women recovering from the disease, a study has found.
article_snippet.sent: Researchers found coffee can stop the growth of tumours in women who have already been treated with the drug tamoxifen.
article_snippet.sent: Just two cups of coffee a day can halve the risk of breast cancer returning and boosts the effect of the drug tamoxifen, researchers found .
article_snippet.sent: Swedish and British researchers found that more than 500 women who had been treated with tamoxifen, and those that had drunk at least two cups of coffee a day, had only half the risk of Swedish and British researchers cancer returning than those who drank less coffee, or none at all.
article_snippet.sent: Ann Rosendahl, a researcher from Lund University who carried out a study, said: 'a study also shows that those who drank at least two cups of coffee a day had smaller tumours and a lower proportion of hormone-dependent tumours. '
article_snippet.sent: Researchers also looked more closely at two substances that usually occur in coffee – caffeine and caffeic acid.
article_snippet.sent: Researchers found the breast cancer cells reacted to two substances that usually occur in coffee – caffeine and caffeic acid, especially caffeine.
article_snippet.sent: Caffeine caused the breast cancer cells to divide less frequency, and die more often, especially when Caffeine was drunk in combination with tamoxifen.
article_snippet.sent: a study found  caffeine caused breast cancer cells to divide less frequently and die more often .
article_snippet.sent: Ms Rosendahl said: 'This shows that these substances have an effect on the breast cancer cells and turn off signalling pathways that the cancer cells require to grow.'
article_snippet.sent: The team demonstrated both in in breast cancer patients and at cell level that coffee can reinforce the effect of treatment with tamoxifen.
article_snippet.sent: Ms Rosenhal added: 'The team are incredibly important, but if you like coffee and are also taking tamoxifen, there is no reason to stop drinking tamoxifen. '
article_snippet.sent: This is not the first study to link coffee consumption with improved cancer prognosis.
article_snippet.sent: Drinking coffee may reduce the risk of cancer in heavy drinkers, research has found.
article_snippet.sent: And scientists at Harvard Medical School have found that women who drink three or more cups of coffee a day have a 20 per cent lower risk of developing the most common form of skin cancer compared to those who had less than one cup per month.
highlights_snippet.sent: Coffee can stop cancer returning in women treated with tamoxifen .
  
highlights_snippet.sent: Coffee drinkers had fewer cancers and Coffee drinkers tumours were smaller .
  
highlights_snippet.sent: Caffeine cuts of signalling pathways that the cancer cells require to grow .