Its becoming a much more common problem in sport, its something I was diagnosed with in my late teens, I still have small blips. Sport can be really damaging, I’ve put a little bit of weight on over lockdown, its only a small amount but its visible as I usually have very low body fat. If I was playing for my old team I would have been punished for my weight gain in front of the team, despite it having no impact on my performance.
There is a huge expectation for certain sports people to look a certain way, by both their employer and some members of the public. When Keegan Hirst posed for attitude there were complaints that he didn’t have visible abs 
A huge issue is during training you do have to up your calories, when I was playing more I would be consuming around 3,500 calories a day, when I wasn’t training I only needed 2,300 a day, thats a huge decrease in food, especially when your appetite doesn’t change.
Support is poor (for women as well), I couldn’t access support on the NHS as I was a healthy weight, the fact that I was also using my insulin to drop weight (which is very dangerous) wasn’t bad enough to access support. I accessed support privately, I had the luxury of being able to afford this, lots of people don’t.