According to this page: http://miffthefox.info/mspa/sweepcalc.html

Rust bloods can only live from 26-52 years, if they’re lucky to not be culled first.

The only KNOWN rust blood to live so far is the Handmaid. 

Not sure if a forgotten fact, but interesting none the less.

==> Submitted by whocaresifimnotperfect