Live Longer, Live Better: Boosting Your Healthy Life Expectancy

As many of you know, Japan is one of the leading nations for longevity. As of 2024 (Reiwa 6), the average life expectancy has exceeded 80 years for both genders, with women at 87 years and men at 81 years.

To all our “high-seniors” and those of you in the “pre-senior” ranks: let’s focus on extending our “Healthy Life Expectancy” so we can enjoy the long road ahead in good health and high spirits.

Today, let’s take a closer look at the concepts of healthy life expectancy, average life expectancy, and life expectancy at a specific age.

Japan: The World Leader in Longevity

“Average life expectancy” refers to the average number of years a person is expected to live. While statistics exist for men, women, and the population as a whole, here is a list of the top countries with the highest combined average life expectancy (as of 2019 data):

Rank	Country	Average Life Expectancy
1	Japan	84.26
2	Switzerland	83.45
3	South Korea	83.30
4	Singapore	83.22
5	Spain	83.22
6	Cyprus	83.14
7	Australia	83.04
8	Italy	82.97
9	Israel	82.62
10	Norway	82.62

The gap between Japan (1st) and Switzerland (2nd) is 0.8 years. Compared to the tiny decimal differences between other ranks, this gap is quite significant, proving that Japan is truly a world-class leader in longevity.

Looking at these countries, a few common characteristics stand out:

• They possess advanced medical systems alongside healthy dietary habits.
• Many are Mediterranean countries (Spain, Cyprus, Italy, Israel).
• There is a strong preference for seafood in their diets.

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What is “Life Expectancy” vs. “Average Life Expectancy”?

Life expectancy (at a specific age) refers to the average number of additional years a person can expect to live from their current age.

A common mistake is thinking, “I’m 50 now, and the average life expectancy for men is 81, so I have 31 years left.” Actually, as you age, the statistical number of years you have left typically becomes longer than the simple “average life expectancy” calculated at birth.

For example (based on 2012 data):

• The average life expectancy for men was 79.
• However, for a man who was already 50 years old in 2012, his remaining life expectancy was 31.7 years.
• This means a man who reached age 50 is expected to live until 81.7—2.7 years longer than the general average.
• Furthermore, a 90-year-old man in 2012 had a remaining life expectancy of 4.16 years, meaning his expected total lifespan reached 94.16.

The only time “average life expectancy” and “life expectancy” are the same is for a newborn baby (age zero).

Understanding Healthy Life Expectancy

Healthy Life Expectancy is defined as “the period during which a person can live a normal daily life without being restricted by physical or mental health issues.”

To put it simply, the years remaining when you subtract “Healthy Life Expectancy” from “Average Life Expectancy” represent the period of “restricted living.” Naturally, the shorter this period, the more comfortable your life will be. From a national perspective, it also reduces the burden on medical expenses.

Here is the statistical breakdown for Japan:

Year	Male (Avg. Life Exp.)	Male (Healthy Exp.)	Female (Avg. Life Exp.)	Female (Healthy Exp.)
2001	78.07	69.4	84.93	72.65
2010	79.55	70.42	86.30	73.62
2019	81.41	72.68	87.45	75.38

Key takeaways from this data:

1. Over the last 20 years, both average and healthy life expectancies have increased by about 3 years for both men and women.
2. The period spent living with restrictions/limitations is approximately 9 years for men and 12 years for women.
3. By 2019, the healthy life expectancy for men (72.68) finally reached the level women held back in 2001.

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Conclusion

The average lifespan for Japanese people is approaching 85 years, and with medical advancements, we are likely to remain a top longevity nation.

Currently, healthy life expectancy has exceeded 75 for women and 72 for men. As we look to the future—aiming for 80 for women and 75 for men—let’s strive for what we call “PPK” (Pin-Pin-Korori): living vibrantly until the very end. To keep the period of infirmity as short as possible, let’s stay mindful of a proper diet and light daily exercise!

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