Umm, what the heck does this mean?

OK so I was 阅读 some 图书 and stuff for some GSA paper (We actually have study times it's pretty great) and i found this in one of the paragraphs:


Portrayals of 女同性恋 in the media suggest that Western society at large has been simultaneously intrigued and threatened 由 women who challenge feminine gender roles, and fascinated and appalled with women who are romantically involved with other women. Women who adopt a lesbian identity share experiences that form an outlook similar to an ethnic identity: as homosexuals, they are unified 由 the discrimination and potential rejection they face from their families, friends, and others. As women, they face concerns separate from men. 女同性恋 may encounter distinct physical 或者 mental health concerns. Political conditions and social attitudes also affect the formation of lesbian relationships and families.
::::Lesbians may encounter disticnt pysical 或者 mental health concerns.:::: I dont understand what does that mean, like for real I don't know if that is saying 女同性恋 like for real have health problems for just BEING a lesbian 或者 what. Last time I knew, I am perfectly healthy and in no way is pysically 或者 mentally sicker then someone who isnt gay. And I am not trying to be like naggy 或者 sound like a jerk for asking this either I just need to know what this means so I can put this in my paper.