I've just received further information about a medical study for which I've signed up. It's a UK study into the causes of breast cancer. It involves completing a detailed questionnaire and a blood sample, followed by another questionnaire and blood sample every five years. It's all completely confidential, of course.
They're hoping 100,000 women will take part in this long-term survey to unravel the factors that cause breast cancer, and hence to find out how it can be prevented. If you're female, over 18 and in the UK, and you'd like more information, go here.