The world's first "elixir of immortality" came out. Metformin may make people live to 120 years old!The world's first "elixir of immortality" came out. Metformin may make people live to 120 years old!The world's first "elixir of immortality" came out. Metformin may make people live to 120 years old!The world's first "elixir of immortality" came out. Metformin may make people live to 120 years old!The world's first "elixir of immortality" came out. Metformin may make people live to 120 years old!The world's first "elixir of immortality" came out. Metformin may make people live to 120 years old!