Some useful stats in this thread.
www.mumsnet.com/Talk/womens_rights/3376303-Butterfly-TV-show
As in above, Prof Michael Brooks put in a FOI request for the actual number of suicides rather than Mermaid's claims and the numbers, each one a tragedy, are very different.
In sum, we know that four trans-identified children committed suicide in England and Wales since about 2008: one in 2017, two in 2016, and one apparently before 2014. To put these tragedies in perspective, the number of patients seen each year by GIDS increased from 700 in 2013/14 (when reporting began) to 2,700 in 2017/18. Figures for patients on the waiting list are not routinely reported, but we know they numbered 1,652 at the end of 2017/18.
Although calculated from only four suicides, the suicide rate is much higher than for teenagers overall—in my rough (over)estimate, 13 times greater. This is a genuine cause for concern. By comparison, anorexia multiplies the risk of suicide by 18 or 31 times (depending on the method of estimation), while depression multiplies it by 20 (Smith, Zuromski, and Dodd 2018). One study finds that autism multiplies the risk of suicide by a factor of 8 (Hirvikoski et al. 2016). This latter figure is especially relevant, given the fact that 35% of children referred to GIDS recently have moderate to severe autism (Butler, De Graaf, Wren, and Carmichael 2018).
www.transgendertrend.com/suicide-by-trans-identified-children-in-england-and-wales/