Should she be allowed to race? A top European court has ruled that star athlete Caster Semenya’s human rights were broken after she was banned from competing in some events in 2018.
Olympic champion wins victory in hormone row
On her toes: Caster Semenya has won Olympic gold in the women’s 800m two times, in 2012 and 2016. Glossary
Testosterone - The hormone that causes people to develop male sexual characteristics. Women also produce some testosterone.
Hormone - Chemicals carried in the bloodstream that alter the way your body's systems act.
Side effects - An unwanted or unexpected result that comes along with the wanted result of an action.
Human rights - The basic rights and freedoms that belong to every person in the world, from birth until death. They apply regardless of where you are from, what you believe or how you choose to live your life. Some have called for animals and even natural phenomena like rivers to have some form of human rights.
Government - The group of people who govern - or lead - the country.
Advantage - Something (such as a good position or condition) that helps to make someone or something better or more likely to succeed than others.