Well no. There's a debate about that since if you could be young forever you'd essentially live forever. Though not technically true since there's things like car accidents and etc that will kill you. Aging is the cause of death for 2/3 of all deaths in the world. For example the Mole Rate can't die from old age cause it doesn't age, and it also can't get cancer. But the mole rat lives on average for about 30 years cause something is going to crush it or eat it. The longer something lives the more likely something will kill it.
There's also menopause for women which won't go away unless we come up with a new technology to fix that. So even if a 80 year old looks 17 you won't be able to start a family with her.