Reference; https://mbp-japan.com/jijico/articles/32457/
Modified and translated by CFJA
Are the Early 30s the Peak of Life? Do Men and Women Reach Their Physical Peak at Different Times?
In Eastern medicine, it is traditionally believed that women reach their peak physical vitality around the age of 28, and men around the age of 32.
This idea is described in the Huangdi Neijing Suwen, in the chapter Shanggu Tianzhen Lun, a text compiled more than 2,000 years ago. Although these writings do not constitute scientific evidence in the modern sense, after many years of clinical practice and contact with numerous patients, I feel that these observations are not far from reality.
According to these classical views, women gradually experience a decline in physical strength between the ages of 28 and 35, while men tend to experience a decline between the ages of 32 and 40.
Men in their thirties rarely develop major illnesses, but women in their late thirties need to pay particular attention to conditions specific to women.
When we compare the health tendencies seen in modern patients with descriptions written more than two millennia ago, we cannot help but admire the remarkable powers of observation of ancient physicians. This may be one of the reasons why Eastern medicine continues to remain relevant today.
In the Edo period, Kaibara Ekiken wrote Yojokun (Precepts for Daily Life), and in the Taisho period, Tsukuda Takichi authored Practical Secrets of Nursing at Home.
Both works focus on methods for maintaining health in everyday life, offering guidance on how to preserve and support well-being.
Are the 30s a Pre-Disease Stage?
According to the 2016 Comprehensive Survey of Living Conditions conducted by Japan’s Ministry of Health, Labour and Welfare, the symptoms that concern people in their thirties do not differ greatly between the early and late thirties.❶
A. Early 30s
- Depression and other mental health disorders
- Other conditions
- Atopic dermatitis
- Lower back pain
- Other skin disorders
B. Late 30s
- Depression and other mental health disorders
- Other conditions
- Lower back pain
- Atopic dermatitis
- Shoulder stiffness
People in their thirties are generally less likely to develop serious internal diseases, even if they occasionally experience sleep deprivation or overeat. This reflects the fact that the body is still relatively strong at this stage of life. However, the mental and emotional aspects of health can be more unstable.
Conditions thought to be related to stress, such as depression, atopic dermatitis, lower back pain, and shoulder stiffness, appear frequently among the most commonly reported concerns.
Data from comprehensive medical checkups (ningen dock) for people in their thirties also reveal the following tendencies:❷
- Dyslipidemia
Abnormal findings are most frequently observed in people in their thirties. - Obesity (BMI 25.0 or higher)
Particularly noticeable in men. About 25% of men in their thirties (one in four) are classified as obese, while about 13–15% of women fall into this category. - Abnormal liver function (ALT / γ-GT)
Higher abnormality rates are seen in men in their thirties. Approximately 30% show elevated ALT (GPT) levels, suggesting risks such as fatty liver. - Occult blood in urine (especially in women)
About 14–15% of women in their thirties test positive, compared with around 4% of men. - Elevated blood pressure (including prehypertension: systolic ≥130 mmHg)
About 15–20% of men in their thirties show slightly elevated blood pressure (130/85 mmHg or higher).
From my own perspective, these findings suggest that although many people in their thirties do not feel any particular symptoms, lifestyle-related diseases may already be quietly developing. It is therefore a stage of life when reviewing one’s daily habits becomes especially important.
The tendencies listed above can form the foundation for various diseases. If the same lifestyle continues, many people begin to develop different illnesses in their forties and beyond.
For those who would like to better understand physical strength and health changes in the forties and fifties, I encourage you to refer to the blog post previously published below.
“Does physical decline really start at 40?! Are there secrets to preventing muscle loss?”
“Is 50 just before the halfway point of a 120-year life? Should obesity be a concern at this age?”
[References]
❶ Comprehensive Survey of Living Conditions 2016
Central Social Insurance Medical Council (General Meeting No. 413)
Agenda Item Sō-3: Issues by Age Group and Generation (Part 2)
❷ Japanese Society of Ningen Dock and Preventive Medicine
National Data Analysis of Health Checkups, Fiscal Year 2018 (Basic Edition)