Endometriosis affects one in 10 women and can cause debilitating pain, extremely heavy periods and sometimes infertility. On average, it takes seven and a half years to diagnose in the UK. Why? According to one of the UK's leading specialists, one reason is the "gender pain gap", wherein women in pain aren't taken as seriously as men.

More than 13,500 women have taken part in BBC research revealing the devastating effect of endometriosis.

Today, following the BBC's findings, MPs will announce launching an inquiry into the condition.

Produced by: Charlotte Pritchard

Filmed by: Brandon Brown and Ahmen Khawaja

Edited and co-produced by: Alex Gatenby

Commissioning Editor: Nisha Lilia Diu