Key points from article :
Amish people have lived in relative isolation since migrating from Europe.
Gene mutation can either cause a bleeding disorder or confer longer life.
Carriers of only one copy of the mutated SERPINE1 gene had an increased healthspan.
Have significantly longer leukocyte telomere length and lower fasting insulin levels.
People with two copies of the mutated allele — also had a bleeding disorder called hemophilia.
The study was published in the Science Advances journal.
