Usando células-tronco embrionárias de macacos, os cientistas criaram espermatozóides funcionais em um animal intimamente relacionado com os seres humanos.
De acordo com o CDC, 330.000 ciclos de tecnologia reprodutiva assistida foram concluídos em 2019. Mas a pandemia interrompeu estes esforços para muitos casais.
É um longo e difícil banho através do trato reprodutivo feminino que o esperma masculino navega, e novas pesquisas estão lançando dúvidas sobre a idéia de que é o nadador mais rápido e mais forte que vem primeiro.
Os pesquisadores dizem que as pessoas que vivem em bairros economicamente desfavorecidos têm cerca de 20% menos probabilidade de conceber, em comparação com as pessoas de áreas com mais recursos.
Muitos especialistas se preocupam com os efeitos que as leis sobre o aborto - tanto as já existentes como as propostas futuras - podem ter sobre os cuidados e tratamentos de fertilidade.
As taxas de infertilidade entre as mulheres nos EUA permaneceram praticamente as mesmas nas últimas duas décadas, de acordo com um estudo publicado este mês na revista Fertilidade e Esterilidade.
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