UnAmerican only in the sense that I think it would be extremely unlikely for this research to be accomplished here. All medical research has to be approved by an IRB (Institutional Review Board) which scrutinizes every aspect of the study, including every survey question, before being performed on humans or animals. And a lot of medical research is funded through federal government grants. Can you imagine the current administration ever funding this: Correlation between oral sex and a low incidence of preeclampsia: a role for soluble HLA in seminal fluid?
Even if you don't read the whole abstract, I think you get the idea from the title. Women should perform fellatio (and swallow) to perhaps avoid preeclampsia when pregnant. Very important biochemically, see honey, the doctor even said so. I can't even imagine attending a research meeting with this group. Somebody would probably break out in Beavis & Butthead chuckles every few minutes. Huh, huh, huh, we said oral sex, huh, huh.
I never said medical research couldn't be fun.