Is "Outliving Your Parents" Not a Given? The Shock of "Lifespan Stagnation" for Those Born After 1970

For a long time, we have almost unconsciously believed this: with advances in medicine, improved hygiene, and higher living standards, the younger generation should live longer than their parents.

However, this assumption is beginning to waver.

According to a new study from the United States reported by the German media FOCUS, people born after 1970 may have a worsening mortality rate at the same age compared to past generations. The issue is not simply that "average lifespan is slightly harder to extend." There are unfavorable trends for younger and middle-aged generations in multiple causes of death, such as heart disease, cancer, drug overdoses, suicide, and traffic accidents.

Of course, this analysis is based on U.S. data and cannot be directly applied to other countries like Japan or Germany. However, as many developed countries face common challenges such as obesity, lack of exercise, mental health issues, economic disparity, aging populations, and rising healthcare costs, the phenomenon in the U.S. cannot be dismissed as "someone else's problem."

Turning Point: Born in the 1950s, Caution for Those Born After 1970

The study in focus analyzed U.S. mortality data by birth cohort. The data spans from 1979 to 2023, and the research team tracked major categories such as cardiovascular diseases, cancer, and external causes of death, in addition to overall mortality.

The key point here is not just looking at "average lifespan for a given year," but examining "which birth cohort is doing better or worse than the previous one at the same age."

The results highlighted those born in the 1950s as a major turning point. For generations born before the 1950s, mortality rates generally improved compared to previous generations. As society became more affluent, medical care advanced, and responses to infectious and acute diseases improved, it became easier to survive with each passing generation.

However, the trend changed around those born in the 1950s. For subsequent generations, the rate of improvement diminished, and for those born after 1970, there were worsening trends in multiple causes of death from young adulthood to middle age.

Particularly for those born between 1970 and 1985, known as the late Generation X and early Millennials, researchers have expressed strong concern. They are not yet elderly, yet signs of disadvantage compared to previous generations are already visible in cardiovascular diseases, cancer, and external causes of death.

This is serious because heart disease and cancer are generally illnesses that become more fatal with age. If deterioration is visible in their 30s, 40s, and 50s, the impact could be even greater in their 60s and 70s.

Medical Advances, But More People Are Getting Sick

At first glance, this seems contradictory. Modern medicine has advanced like never before. There are more opportunities to save people from heart attacks and strokes, and cancer treatments have significantly changed with targeted therapies and immunotherapy. Diseases like diabetes and hypertension can be managed for a long time if detected early and properly managed.

So why has the extension of lifespan stalled, and why is the mortality risk worsening for younger generations?

The answer researchers provide is not simple. Rather, the core of the problem is that "it cannot be explained by a single cause."

Medicine is saving lives. However, at the same time, more people are getting sick in the first place. Obesity, diabetes, hypertension, chronic stress, lack of sleep, lack of exercise, a diet centered on processed foods, drug dependence, isolation, and economic anxiety. These factors may accumulate in the body over time, potentially negating the benefits brought by medical advancements.

In other words, while life-saving technology progresses, the worsening social environment that generates diseases is advancing simultaneously.

The Significance of Slowed Improvement in Heart Disease

In recent years, drug overdoses, particularly the opioid crisis, have often been cited as factors lowering the average lifespan in the U.S. Indeed, deaths from overdoses have left a significant scar on American society.

However, the current analysis also shows that the impact of cardiovascular diseases is very significant.

In the latter half of the 20th century, mortality rates from heart disease and strokes in the U.S. significantly declined. This was due to the spread of anti-smoking campaigns, blood pressure management, cholesterol treatment, improvements in emergency medical care, and advances in surgical treatments. But around 2010, the pace of this improvement slowed. In some cases, deterioration was observed.

The background to this is likely the increase in obesity and metabolic disorders. If more people gain weight from a young age and have hypertension, lipid abnormalities, and diabetes, the burden on the heart and blood vessels becomes prolonged. Even if it can be medically treated, if the number of patients continues to increase across society, improvements in mortality rates will plateau.

In this regard, the question is not just about "medical access" but whether society can provide a living environment that makes it difficult to get sick.

The Ominous Sign of Increasing Colorectal Cancer in Young Generations

Another major warning is the increase in colorectal cancer among young people.

In recent years, the increase in colorectal cancer among those under 50 has gained attention not only in the U.S. but in other countries as well. While there is an aspect of increased detection due to more screenings, the concern in the current study is not just the number of diagnoses but the worsening mortality rate.

If it were just early detection, the mortality rate should actually decrease. However, if deaths are increasing among younger generations, there may be some substantial risk increase occurring.

Factors such as obesity, diet, gut environment, lack of exercise, alcohol, and environmental factors are suspected. However, the definitive cause is still unknown. This is precisely why it is troublesome. It's not about ignoring it because it's unknown; rather, because it's unknown, screenings, attention to symptoms, and reviewing lifestyle habits become important.

Particularly, overlooking symptoms like bloody stools, changes in bowel habits, unexplained weight loss, abdominal pain, and anemia with the thought "I'm young, so it's fine" is dangerous. Cancer in younger generations is hard to anticipate for both the individual and the medical side, which can lead to delayed detection.

External Causes of Death Indicate "Societal Pain"

It's not just heart disease and cancer. The study also treats external causes of death such as drug overdoses, suicides, homicides, and traffic accidents as important factors.

These may seem disparate at first glance. However, there may be common social factors in the background. Economic anxiety, loneliness, weakening of community ties, lack of mental health support, access to drugs, car-centric lifestyles, and work stress. When these factors overlap, people are more likely to lose their lives not only to illness but also to accidents, self-harm, and addiction.

In the U.S., there is also bright data indicating a significant decrease in deaths from drug overdoses in 2024. The spread of naloxone and the effects of public health measures have been pointed out. However, in the long term, drug issues still cast a large shadow over the mortality of young and middle-aged groups.

Lifespan is not a number determined solely within hospitals. Work styles, living places, food, transportation, human relationships, education, income, security, and drug policies—all these factors contribute to lifespan.

On Social Media, Reactions Focus on "Disparity," "Diet," and "Stress"

 

This study and related articles have sparked significant reactions on social media.

In Reddit's science community, voices are prominent that perceive this not just as a medical news story but as a social structural issue. Many users focused on the connection between income disparity and health disparity. Comments with the sentiment "If the economy divides in a K-shape, mortality rates might also divide in a K-shape" were shared, expressing concerns that the affluent become healthier while those struggling become less healthy.

There were also many voices criticizing the U.S. healthcare system itself. The high cost of treatment, the complexity of the insurance system, and delays in receiving care are seen as hindrances to early detection and continuous treatment of diseases. This strongly reflects the unique context of the U.S.

There were also many reactions regarding lifestyle habits. Long working hours, lack of sleep, poor diet, lack of exercise, suburban living centered on car travel, and chronic stress. Comments based on personal experiences, such as "We work too much, sleep too little, and eat too poorly," were widespread.

However, it's not all pessimistic. There are voices expressing hope for advances in obesity and diabetes treatments, the success of anti-smoking policies, and improvements in drug overdose measures. In other words, the reactions on social media are not about giving up, but rather a sense of crisis that "if we don't change the design of society, healthcare alone won't keep up."

On LinkedIn, healthcare and public health professionals shared this study, emphasizing the importance of looking at mortality trends by birth cohort. The concern is that without examining which generation is worsening in which causes of death and at what age, policy responses may be misguided.

On Instagram and Facebook, strong words like "born after 1970" and "shorter lifespan than parents" attracted attention. However, this also led to misunderstandings. This does not mean that everyone born after 1970 will necessarily die earlier than their parents. It is a discussion that, in U.S. group data, mortality rates at the same age show a worse trend than the previous generation.

"Personal Responsibility" Alone Cannot Explain It

The most important thing to avoid in this theme is reducing everything to a lack of individual effort.

Indeed, diet, exercise, sleep, smoking cessation, moderate drinking, and screenings are important. There are aspects individuals can change. However, it is also true that there are societies where healthy choices are easier to make and those where they are not.

In societies where cheap, high-calorie foods are easily accessible, walking is difficult, healthcare costs are high, work stress is significant, rest time is short, and isolation is easy, it is difficult to maintain health through individual effort alone.

Health disparities are linked to income disparity, educational disparity, and regional disparity. Wealthier people tend to live in safer areas, choose better-quality food, have time to exercise, and access healthcare quickly. Conversely, those with unstable lives are more likely to be in situations where they have to choose unhealthy options.

Therefore, the issue of lifespan is not only medical news but also economic news, a labor issue, urban policy, and an educational issue.

Lessons for Japan

Japan is a country with a long average lifespan globally, and its healthcare system and food culture differ significantly from those of the U.S. Therefore, the findings of this U.S. study cannot be directly applied to Japanese society.

However, Japan also faces similar risks.

For example, stress, lack of sleep, lack of exercise, isolation, mental health issues among the working-age population, economic anxiety among the younger generation, the increase in single-person households, dependence on processed foods, and issues related to obesity and pre-diabetes. Furthermore, as Japan continues to age, the health deterioration of the working-age population will have a significant impact on the overall social security system.

The reassurance that "Japanese people live long, so it's okay" does not automatically guarantee the future. Longevity has been achieved through the accumulation of past public health, healthcare systems, dietary habits, and community ties. If that foundation crumbles, the extension of lifespan will also slow down.

The Real Question is Living Without Illness, Not Just Living Longer

In discussions about average lifespan, the focus inevitably shifts to "how many years one lives." However, what will become important in the future is healthy lifespan.

With medical advancements, more people will live longer while having diseases. This in itself is a significant achievement. However, if the period of living with chronic diseases becomes longer, quality of life decreases, and medical and caregiving burdens increase, it becomes a heavy issue for both individuals and society.

The current study is not merely about the fear that "younger generations might have shorter lifespans." Rather, it questions whether society can shift from relying solely on "medicine that cures diseases" to creating an environment where diseases are less likely to occur.

Just as anti-smoking policies contributed to the reduction in deaths from lung cancer and cardiovascular diseases, societal rules and environments can change people's lifespans. Therefore, serious efforts are needed to address obesity, diet, lack of exercise, stress, drugs, isolation, and disparity.

The Future Lifespan is Determined by Today's Social Design

The generation born after 1970 has experienced fast food, car-centric society, television, computers, smartphones, social media, long working hours, economic anxiety, and pandemics since childhood. In exchange for convenience, they have lost opportunities to move their bodies, deep sleep, connections with the community, and a sense of stable living.

The impact of this may now be gradually appearing in the form of mortality rates.

However, the future is not fixed. There are many measures that can be taken, such as risk management for cardiovascular diseases, early detection of colorectal cancer, obesity measures, support for drug dependence, mental health measures, creating walkable cities, access to healthy food, and improving work styles.

The question is whether these issues will be confined to individual perseverance or treated as challenges for society as a whole.

The era when it was believed that "you can live longer than your parents" was a significant success for humanity. However, that success is not guaranteed forever. Lifespan is not extended solely by medical advancements. It is also determined by daily life, social disparity, urban structure, food environment, work styles, and the lack of loneliness.

The headwinds seen in the lifespan of those born after 1970 are a warning from the future. If we do not change the design of society now, the next generation may be born in an "era of longevity" but may not be able to enjoy longevity.

Source URL

FOCUS Online. An article reporting key points on worsening mortality rates for those born after 1970, including cardiovascular diseases, cancer, and external causes of death.
https://www.focus.de/gesundheit/news/wer-nach-1970-geboren-ist-hat-eine-geringere-lebenserwartung-als-die-vorgaenger-generationen_0d357d61-f531-434c-ae5e-6b008bf