Tijdens de pandemie daalde het geboortecijfer in de VS voor het zesde jaar op rij. De vruchtbaarheidscijfers in de VS stonden al op een laagterecord vóór de pandemie, aldus het centrum.
Maar zal een wijdverspreide screening van pasgeborenen ouders meer zorgen dan troost geven? Onderzoekers die deze vraag onderzoeken, hebben enkele vroege antwoorden.
Nieuw onderzoek identificeert enkele factoren die verband houden met veranderingen in de geslachtsgebonden geboorteverhoudingen en sluit enkele andere uit.
De werkzame stof die zwarte peper zijn kenmerkende pit geeft, komt in zeer lage concentraties in de moedermelk terecht, maar mogelijk net genoeg om baby's die borstvoeding geven eraan te laten wennen.
Eerder onderzoek heeft verstoringen van zwangerschapshormonen gekoppeld aan een verhoogd risico op problemen zoals verminderde foetale groei, vroeggeboorte en een laag geboortegewicht.
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