Geroscience: the need to address some issues.

The geroscience field hypothesises that it could be possible to delay all age-related diseases by delaying the ageing process itself, and not by curing each age-related disease individually. While this perspective is attracting, some issues provisionally prohibit to fully adhere to it, such as the risk for some over-enthusiasm or scientism and the tendency to accept that results observed in animal models can be easily translated in human beings. Particularly, it is not clear whether geroscience plans to delay or suppress ageing, or if healthspan could become very close to lifespan.

New life expectancy forecasts are too optimistic.

Life expectancy at birth (e0) forecasts are used to estimate future pension costs. Previous French official forecasts have often overestimated e0. Recent forecasts published by demographers provide higher e0 estimates than official forecasts for France, Sweden, Japan and the USA, and do not consider that e0 could decrease, as in previous years because of flus, heatwaves, or other outbreaks.