Anorexia nervosa certainly occurs in men, but it’s far, far less common than in women. There’s some evidence that binge eating disorders occur about equally in men and women.
Speaking of eating, something that could be viewed as discriminatory is the portrayal of obese people in editorial cartoons. These are heavily skewed towards showing fat white men, and to a considerably lesser extent fat white women. I can’t recall ever seeing fat black and Hispanic people portrayed in such cartoons, even though prevalence of obesity is higher in these groups.
I don’t understand the discrimination against men angle in the anorexia one. (Well, I don’t understand it at all, but especially the anorexia one.) It says “often girls and young women.” It doesn’t say men don’t suffer.
When – not if – the gender is reversed, prison rape is treated as suitable fodder for dirty jokes, exploitation flicks, and pornography. The cultural attitude towards prison rape is pretty fucked up whether the prisoners involved are male or female.
I don’t think crimes against men should be reported under the umbrella or title of crimes against women. It hides and, in my opinion, minimizes that men are also victims of the same crimes. So, if that’s what happened, I think that’s problematic (without being catastrophic).
The first reply to the OP, by AHunter3, is absolutely correct. Gender oppression, whether it happens toward men or women, cis or queer, eventually comes back to hurt everyone. When men label women as weak and beneath them and less than them, then find themselves suffering from a problem associated with women, is it a surprise when others think of them as weak, beneath, less?
The problem isn’t just that men aren’t included in the statistics of traditionally women’s problems. It’s that men still think so poorly of women that any association between themselves and perceived femininity is treated as metaphorical castration. Hence it’s constant use in movies as humiliation comedy.
It’s a discrimination of men, in that it’s men suffering from men’s discrimination of women.