All news on the topic: Testosterone

Caster Semenya has spoken out after the European Court of Human Rights ruled in her favour over rules regarding testosterone levels in female athletes

Caster Semenya has been in a long-running dispute with World Athletics since regulations requiring her to take hormone treatment to decrease her natural testosterone levels were introduced in 2018

Low levels of testosterone in men can lead to a whole host of issues but there are some key signs to watch out for beyond just decreased sex drive which could be an indicator of low testosterone levels

Hikikomori is a term coined in Japan in the 1990s, but the anti-social trend which sees people socially isolating themselves has become widespread across not just the US, but other countries too

Jake Smith is one of the first elite male athletes to speak out about a RED-S diagnosis. After breaking a foot and bone in his lower back owing to restricted eating, the 25-year-old is on the road to recovery and tells Mirror Sport he is now looking to become an Olympian

Brendan McCann took a photograph every day since they started HRT in August last year - documenting the changes in their face across 266 images

The Olympic hero, who won a remarkable five gold medals at five consecutive Games, tells James Moore about discovering he has a testosterone deficiency

Mark Nock, 61, found a 'Polo-sized' lump in his chest before being diagnosed with stage two breast cancer - and treatment drugs left him with hot flushes and dizzy spells

Kieran Kelly, who died in 2001, is thought to have been responsible for more than 29 deaths around London in the 1970s after witnessing a suspicious number of "suicides"

From April 1, Brits will be set to pay increased fees for their NHS prescriptions due to persistently high inflation as a new specialised pre-payment certificate is introduced

Georgia Harkness, from St Helens, met criminal Ashley Blackett while she was a nurse at HMP Risley in Warrington back in 2017

Researchers at the Northwest Minzu University in China set out to determine the impact of carbonated drinks like Coca-Cola and Pepsi on fertility during a 15-day study

British superbike champion Dan Linfoot suffered with male-pattern baldness and said it affected his mental health, leaving him feeling like he couldn't recognise himself in the mirror

The six-year-old runs for the first time since racing as a filly in Germany after which connections made the discovery that she also had male organs which were subsequently removed