Board Thread:Suggestions forum/@comment-29212138-20170509224844/@comment-29773086-20170512012635

"Belike the old tales speak well; there is Elvish blood in the veins of that folk, for the people of Nimrodel dwelt in that land once long ago"

Whether or not this is true is irrelevant; for the people were said to be also of 'the high blood'; that is, Númenórean or Dúnedain heritage. Which justifies a higher health in itself.