10 Global life expectancy has increased by almost 40 years in the last century alone. It stands at around 73 years on average worldwide, and between 81 and 82 years in the European context. At the other extreme, we find sub-Saharan African countries where it is difficult to surpass 55. Life expectancy is, therefore, a reflection of inequalities on a global scale, but also an indicator of welfare policies. Because even in the developed world, not everything is set in stone. It is assumed that, now a quarter of the way through the 21st century, things should continue to evolve positively, but the United States, where life expectancy had already stagnated and is now beginning to decline, is a reminder that we cannot take anything for granted.

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