A woman who detransitioned in 2018 says there are many people who have had gender reassignment surgery who wish they hadn't.
Hundreds of young transgender people are seeking help to return to their original sex, a woman who is setting up a charity has told Sky News.
Charlie Evans, 28, was born female but identified as male for nearly 10 years before detransitioning.
The number of young people seeking gender transition is at an all-time high but we hear very little, if anything, about those who may come to regret their decision.
There is currently no data to reflect the number who may be unhappy in their new gender or who may opt to detransition to their biological sex.
Charlie detransitioned and went public with her story last year - and said she was stunned by the number of people she discovered in a similar position.
"I'm in communication with 19 and 20-year-olds who have had full gender reassignment surgery who wish they hadn't, and their dysphoria hasn't been relieved, they don't feel better for it," she says.
"They don't know what their options are now."
Charlie says she has been contacted by "hundreds" of people seeking help - 30 people alone in her area of Newcastle.
"I think some of the common characteristics are that they tend to be around their mid-20s, they're mostly female and mostly same-sex attracted, and often autistic as well."
She recalls being approached by a young girl with a beard who hugged her after giving a public talk, who explained she was a destransitioned woman too.
"She said she felt shunned by the LGBT community for being a traitor. So I felt I had to do something."
Charlie is now launching a charity called The Detransition Advocacy Network, with their first meeting set to be held in Manchester at the end of the month.
Sky News went to meet one person who has contacted Charlie's network for help.
She does not want to be identified so we have changed her name.
Ruby is now 21 but first began identifying as male at 13.
After taking testosterone her voice got a lot deeper, she grew facial hair and her body changed.
She had been planning to have surgery to remove her breasts this summer.
However, in May, Ruby voiced the growing doubts she had been harbouring and made the decision to come off testosterone and detransition to identify as female.
"I didn't think any change was going to be enough in the end and I thought it was better to work on changing how I felt about myself, than changing my body," says Ruby.
