Five in six women with increased risk of breast cancer turn down drugs that are likely to prevent the disease finds cancer research scientists in Britain. Our important research reveals that only a small proportion of eligible women make the decision to have preventative medication said study author Sam Smith from the Queen Mary University of London. It's crucial to find out why so many chose not to take the drugs -- or stopped taking them before completing the course Smith added. Researchers collected data from 21000 women of all ages at increased risk of developing breast cancer. Here are