2016 Nobel Prize for physiology or medicine
"Self-eating"
The body destroying its own cells may not sound like a good thing. But autophagy is a natural defence that our bodies use to survive. It allows the body to cope with starvation and fight off invading bacteria and viruses, for example. And it clears away old junk to make way for new cells. Failure of autophagy is linked with many diseases of old age, including dementia.
2015 - Three scientists - William C Campbell, Satoshi Ōmura and Youyou Tu - for anti-parasite drug discoveries.
2014 - Three scientists - John O'Keefe, May-Britt Moser and Edvard Moser - for discovering the brain's navigating system.
2013 - James Rothman, Randy Schekman, and Thomas Sudhof for their discovery of how cells precisely transport material.
2012 - Two pioneers of stem cell research - John Gurdon and Shinya Yamanaka - were awarded the Nobel after changing adult cells into stem cells.
2011 - Bruce Beutler, Jules Hoffmann and Ralph Steinman shared the prize after revolutionising the understanding of how the body fights infection.
2010 - Robert Edwards for devising the fertility treatment IVF which led to the first "test tube baby" in July 1978.
2009 - Elizabeth Blackburn, Carol Greider and Jack Szostak for finding the telomeres at the ends of chromosomes.