In France, the proportion of people reaching 80 years old has steadily increased since the post-war period. This progression does not follow the same pace depending on gender, socio-professional category, or territory. Understanding these disparities requires distinguishing several statistical concepts that data from Insee allows us to dissect.
Life expectancy and probability of reaching 80: two distinct indicators
Life expectancy at birth measures the average number of years a newborn can expect to live if the mortality conditions of the current year remain constant. The probability of reaching a given age, on the other hand, is calculated from generation-specific mortality tables: it incorporates anticipated future changes in mortality.
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Confusing the two leads to frequent misunderstandings. A life expectancy at birth close to 80 years does not mean that half of the population dies before this age. Generation-specific mortality tables show that a majority of French people born after 1950 exceed this threshold.
Insee regularly publishes long series on life expectancy by gender and age. According to this data, the gap in life expectancy at 60 between men and women has continuously narrowed since the early 2000s, meaning that the proportion of French people living to 80 is gradually converging between the sexes. The increase in this proportion is much more pronounced among men over the last two decades.
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Male mortality before 80: a recent catch-up
Historically, French men exhibited a pronounced excess mortality between the ages of 50 and 79, linked to well-identified factors: alcohol and tobacco consumption, work accidents, and late access to healthcare. This pattern has begun to decline.
Insee documents a gradual convergence of male mortality towards female levels. Specifically, the proportion of men reaching 80 has increased faster than that of women in recent years. Women still maintain an advantage, but the gap is narrowing.
Several factors explain this catch-up:
- The decline in male smoking that began in the 1980s, with effects on lung cancer mortality manifesting with a delay of several decades.
- The improvement in the management of cardiovascular diseases, the leading cause of death among men in this age group.
- Earlier access to screening, encouraged by public health campaigns targeting men over 50.
This catch-up has direct consequences on retirement system projections. The Pension Advisory Council (COR) notes in its 2024 annual report that the probability of reaching 80 is approaching the probability of reaching the legal retirement age for generations born after 1960. Actuaries are revising upwards the average duration of receiving the basic pension, particularly for women.
Healthy life expectancy after 65: the downside of disabilities
Reaching 80 years does not indicate the state of health at that age. Inserm and DREES distinguish total life expectancy from disability-free life expectancy, an indicator that measures the number of years lived without major functional limitation.
According to their summary published in 2023, the proportion of French people reaching 80 in good health is progressing more slowly than the proportion of those who reach 80 in general. The number of years lived with disabilities after 65 is slightly increasing.
This gap nuances the idea of a simple happy extension of life. Living longer does not guarantee living better. The gain in longevity is partly reflected in additional years lived with partial or total dependency, which weighs on the healthcare system and family caregivers.
Territorial disparities in longevity in France
The probability of reaching 80 years varies significantly depending on the place of residence. The National Agency for Territorial Cohesion (ANCT) documents these disparities through its observatory.
The southern and western regions generally show a longevity higher than the national average. The northern and northeastern departments, marked by an industrial past and less favorable socio-economic indicators, exhibit higher rates of premature mortality.
These disparities are not solely related to climate or lifestyle. They reflect inequalities in access to care, medical density, and income level. The socio-professional category remains the primary determinant of longevity in France: a senior executive lives on average several years longer than a worker, a gap that Insee has consistently measured for decades.
Demographic projections: what share of over 80s tomorrow
Insee’s projections for 2070 anticipate a significant increase in the share of those over 80 in the French population. The aging of the baby boomer generation, combined with continued gains in life expectancy, is expected to give this age group an unprecedented demographic weight.
This evolution raises concrete questions:
- The funding of pensions, with a duration of receipt that is lengthening while the ratio of active workers to retirees decreases.
- The adaptation of the housing stock, as the majority of French homes are not designed for the home care of people losing autonomy.
- The training and recruitment of professionals in elderly care, a sector already under strain.
The question is no longer whether the majority of French people will reach 80, but under what conditions. Inserm’s data on disability-free life expectancy shows that the challenge of the coming decades lies less in extending lifespan than in the quality of the years gained after 65.