Even if one avoided all fatal diseases, aging would eventually result in the body losing its ability to recover from illness and injury. This means that with current medicine and technology, there is a limit to how long a human can live. Based on mathematical modelling, studies have estimated this age limit at around 140 to 150 years of age.
The oldest human whose age was well documented, Jeanne Calment, lived 122 years and 164 days. As our ability to prevent and treat chronic diseases of ageing improves, we will probably see this age surpassed. However, breakthroughs in our ability to target the fundamental biology of aging may be needed if we are to increase maximum possible human lifespan.