Do Plants exist who have an effect on human fertility?

[BurnedWitch]

Are there any plants whose pollen increase or decrease human fertility?
Or generally speaking, do plants exist whose mere presence has an effect (positive or negative) on human fertility?

I did some searching on google on this topic, but besides some herbs that are said to increase fertility when taken orally, I couldn't find anything.

Thank you very much!

[JackBean]

Sure, I bet if you eat Herb-paris ( http://www.biolib.cz/en/taxon/id41928/ ), you won't be fertile anymore

Anyway, why should it be pollen?

[JackBean]

Is it because pollen is male reproductive so it should increase human man's fertility? For such reasons are killed sharks and rhinos (without any real reasoning)

[BurnedWitch]

Actually I'm more interested in the decrease of a human's fertility (man or woman). And I agree, killing sharks and rhinos, or generally the killing of endangered species for selfish reasons and alleged effects that aren't even proven is despicable like nothing else!

Also, it doesn't have to be pollen. Just thought that's the most likely way that a plant's presence could have an effect on humans.

I was just wondering because there definitely are plants whose simple presence has an effect on the human body. Just think of hayfever. Also I know of some plants who have a slight psychoactive effect when being near you for some time, like Ledum palustre.