Utilizzando cellule staminali embrionali di scimmia, gli scienziati hanno creato spermatozoi funzionali in un animale strettamente imparentato con l'uomo.
Secondo il CDC, nel 2019 sono stati completati 330.000 cicli di tecnologia di riproduzione assistita. Ma la pandemia ha interrotto questi sforzi per molte coppie.
Gli spermatozoi maschili attraversano il tratto riproduttivo femminile con una lunga e difficile nuotata e una nuova ricerca mette in dubbio l'idea che sia il nuotatore più veloce e più forte ad arrivare per primo.
I ricercatori affermano che le persone che vivono in quartieri economicamente svantaggiati hanno circa il 20% in meno di probabilità di concepire, rispetto alle persone provenienti da aree con maggiori risorse.
Molti esperti si preoccupano degli effetti di "ricaduta" che le leggi sull'aborto - sia quelle esistenti che le proposte future - potrebbero avere sulle cure e sui trattamenti per la fertilità.
Secondo uno studio pubblicato questo mese sulla rivista Fertility and Sterility, il tasso di infertilità delle donne negli Stati Uniti è rimasto pressoché invariato negli ultimi vent'anni.
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