Putin's close ally, Mikhail Kovalchuk, oversees research into extending human life spans using more than 7,000 primates, including elderly monkeys over 30 years old.
Scientists at Russia's Kurchatov Institute study aging through biological, vascular and brain analyses.
Putin, 74, has shown an interest in longevity, and has previously discussed with Chinese President Xi Jinping the possibility of humans living to 150.
Source: Bloomberg