Board Thread:Theories and Speculation/@comment-3365837-20160826052003/@comment-24941352-20160827122953

Whoever says the seal weakens by every women who gives birth? Kushina was special she was from the Uzumaki Clan and had strong chakra to bind kuruma. Hashiramas wife was the first jinchūriki and had children with him and she was from the Uzumaki Clan too. So far i goes only within the Uzumaki Clan the seal weakens by birth and i think other female jinchūriki would have died.