Board Thread:Theories and Speculation/@comment-3365837-20160826052003/@comment-24941352-20160827150804

You should read the full post Heliosraven wrote: So far i goes only within the Uzumaki Clan the seal weakens by birth and i think other female jinchūriki would have died. That means if already the Uzumaki Clan Members suffer such consequence by giving birth. What would it mean for other female jinchūriki?

And most of the other countrys didn´t use such strong seals like the Uzumaki Clan or Minato did.