Giant tortoises have exceptionally long lifespans and often live well past 100 years old. Now, a new study unveils genetic clues to the animals’ longevity, including gene changes that may protect giant tortoises from cancer, bolster the immune system and help regulate metabolism. The findings add to how these processes contribute to aging.

“We found interesting [genetic] variants potentially affecting six [aging] hallmarks in giant tortoises, opening new lines for aging research,” said Ca