וּבְגוּדְגְּדָנִיּוֹת מִי מְעָרְבִין? וְהָתַנְיָא: גּוּדְגְּדָנִיּוֹת — מְרוּבֵּי בָנִים יֹאכֵלוּ, חֲשׂוּכֵי בָנִים לֹא יֹאכֵלוּ. וְאִם הוּקְשׁוּ לְזֶרַע — אַף מְרוּבֵּי בָּנִים לֹא יֹאכֵלוּ!

The Gemara asks: But may one establish an eiruv with sweet clover? Wasn’t it taught in a baraita with regard to sweet clover that those who have many children may eat it, but those without children may not eat it, as it is harmful to one’s reproductive capacity; and if it was hardened into seed, i.e., if it became very hard and already fit to be planted, even those who have many children may not eat it? Therefore, we see that it is prohibited to eat sweet clover. How can it possibly be used to establish an eiruv?

for Video Shiur click here to listen:  Psychology of the DAF Eruvin 28

Believe it or not Red Clover actually contains estrogen-like compounds and may help female fertility, and by a similar effect reduces male fertility. In fact in one study it was used as a treatment for enlarged prostate. 

Sources :

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2858001/

https://pubmed.ncbi.nlm.nih.gov/18308079/  

for Video Shiur click here to listen:  Psychology of the DAF Eruvin 28

Translations Courtesy of Sefaria

Photo Abba Mari Rav Chaim Feuerman, Ed.D. ZT"L Leiyluy Nishmaso

Translations Courtesy of Sefaria, except when, sometimes, I disagree with the translation

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