Could humans live forever someday?

Maybe in the sense of indefinite life extension, but probably not literally forever.

• Literal immortality is extremely unlikely. Even if aging were stopped or greatly slowed, people would still face risks like accidents, violence, infections, disasters, and other causes of death.
• What scientists do discuss is radical life extension or negligible aging, where age-related decline might be slowed a lot or perhaps greatly reduced.
• Today, the longest verified human lifespan is about 122 years (often rounded to roughly 120–125 years), and no proven treatment can yet stop or reverse human aging.

Researchers are exploring several possible routes, including cellular reprogramming, senolytics to remove senescent cells, telomere-related therapies, improved organ replacement/repair, and other regenerative medicine approaches. In the longer term, some people also speculate about advanced artificial organs or nanotechnology helping repair or replace failing body parts, but those ideas remain highly experimental.

So the best short answer is: humans might someday live much longer and healthier lives, but living forever is highly speculative and not something science can currently promise.