While there is anectdotal evidence pointing to a significantly shortened lifespan for people with Down syndrome; one study, carried out in the United States, showed an average lifespan of 49 years.
While there is evidence pointing to a shortened life expectancy for people with Down syndrome, it is clear that persons with Down syndrome are living longer then they have previously. One study, carried out in the United States, showed an average lifespan of 49 years.