25 October 2010

A - Z of THG

Tetrahydrogestrinone (THG) is the steroid at the centre of the new major athletics doping scandal. Health24 explains what the drug is.

It is believed that British sprinter Dwain Chambers and up to 20 American athletes tested positive for tetrahydrogestrinone (THG). The athletes who tested positive for THG include Olympic champions and world record holders. The International Association of Athletics Federations announced that it will re-test around 400 samples taken during the world athletics championships in Paris in August.

What is THG?
It is a new, specially designed anabolic steroid which has been tweaked by chemists to make it undetectable under normal testing.

  • the development of inappropriate sexual characteristics such as breasts in men, and facial hair in women
  • a deepening of the voice
  • baldness
  • male impotence


Read Health24’s Comments Policy

Comment on this story
Comments have been closed for this article.

Live healthier

Lifestyle »

E-cigarettes: Here are five things to know

E-cigarettes have become hugely popular in the past decade, but a rash of vaping-linked deaths and illnesses in the US is feeding caution about a product that's already banned in some places.

Allergy »

Ditch the itch: Researchers find new drug to fight hives

A new drug works by targeting an immune system antibody called immunoglobulin E, which is responsible for the allergic reaction that causes hives.