I believe you when you say you’re not anorexic, or ever had anorexia, but as a 43 year old man, who is 185cm tall, my healthy range is 63-86 kilos.

I am 82 kilos give or take a meal, and if I lost 15 kilos I would be pretty very, very slender, and that would still keep me well in the “healthy” range.

What I’m saying is the healthy range, to me at least, should be taken with a pinch of salt, and it’s shithouse that diagnosis has vexed you for over ten years.