Medical Sciences Section The Medical Sciences Section organised the following events for the 2017 British Science Festival: Risk and uncertainty in breast cancer treatment For most women, being diagnosed with breast cancer causes significant emotional stress. The pressure of making important decisions about treatments, which often come with distressing side effects, can increase anxiety. Dame Lesley Fallowfield discusses her research into the psychological impact of breast cancer and shows how doctors can minimise stress by improving communication around risk and uncertainty of test results and recommended treatments. The future of abdominal aneurysm treatmentAbdominal aneurysms are often symptom-less and can be life-threatening if not spotted early. Alexander Movchan and Luca Argani described a distinctive new model used to combat abdominal aneurysms known as ‘EVAS’. Attendees discovered the future of EVAS and how it is impacting on treatment for the disorder. President 2017: Professor Dame Leslie Fallowfield, University of Sussex President 2016: Professor Andrea Nelson, University of Leeds President 2015: Iszi Lawrence Recorder: Dr. Andrew Holding, Cancer Research UK's Cambridge InstituteDr Andrew Holding is a Research Associate at the Cancer Research UK's Cambridge Institute. Andrew started studying chemistry at the University of Oxford before he went on to apply these skills to investigate how life works at a molecular level. During his PhD at the University of Cambridge he focused on how nature makes the antibiotics we use to treat antibiotic resitant infections including MRSA. In 2009 he moved to the MRC Laboratory of Molecular Biology as a Career Development Fellow investigating how the machinery within the cells interacts to undertake basic processes including the replication of DNA. In 2013 Andrew moved to the Cambridge Institute to focus on the molecular processes that drive breast cancer.