Umm, what the heck does this mean?

OK so I was reading some books 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 lesbians in the media suggest that Western society at large has been simultaneously intrigued and threatened by 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 by the discrimination and potential rejection they face from their families, friends, and others. As women, they face concerns separate from men. Lesbians may encounter distinct physical or mental health concerns. Political conditions and social attitudes also affect the formation of lesbian relationships and families.
::::Lesbians may encounter disticnt pysical or mental health concerns.:::: I dont understand what does that mean, like for real I don't know if that is saying Lesbians like for real have health problems for just BEING a lesbian or what. Last time I knew, I am perfectly healthy and in no way is pysically or mentally sicker then someone who isnt gay. And I am not trying to be like naggy or sound like a jerk for asking this either I just need to know what this means so I can put this in my paper.