Human lifespan could stretch to just above 100 with the right technology but its more about how comfortable people are as they get older. Can we make the lives of someone who is 90 as comfortable and active as that of someone who is 70. If so what is required? What do you think could help someone who is 90 live a more active life?
And as for immortality no i don’t believe its possible our bodies at the end of the day will eventually shut down. And i believe this purely due to the biology and cell reproduction.