Letters | 6 September 2008

Heartbeats of delight

Sir: Few would disagree with Paul Johnson’s view that prolonging the human lifespan is of little value if it merely gives us extra years of Alzheimer’s and debility (And another thing, 30 August). But we do not all live for the average span, and one reason for the increase in average age since the early 19th century has been the massive reduction in child mortality.