[tomp]

Well this idea has been around for a while. I always foundit a bit iffy... like, human sperm is one of the most innocent things people get in their mouths/digestive tracts... so if that can influence your immune system (and making it less effective at that), what will eating some wild viruses-containing meat or bacteria-covered fruit do?!

[AstralStorm]

We typically try it to render it inert by cooking and cutting out glands.

See, sperm contains hormone-like peptides, evolved for humans to react to. You do not generally eat concentrated amounts thereof. (At least didn't...)