I'll be honest, your "hook" is boring:
"Questions about women’s healthcare in today’s society deeply interest me as an American woman during a historical moment in which women’s right to healthcare is being hotly contested. "
It's too general, a bit awkward, and not very interesting. There's nothing about this sentence that grabs my attention, in fact, if I was a profession reading 500 applications, I'd probably not remember yours well enough to even consider it. What you need is more "spunk". Why in the world does this interest you, Alicia? I'm a woman too, but this topic doesn't interest me (well, more than any other topic in modern American history), but why did this catch your eye?
What you need is to go a bit more personal. Dig a bit deeper. Don't just talk about the history, hook it in with who you are and why these professions locked in the back room should chose you for their graduate program.