News Desk, Biggani.org
We all go through the process of aging. But have you ever wondered—how quickly do people in a particular country reach old age on average? Or how much does this pace depend on a country’s social and political context? A recent comprehensive study published in Nature Medicine reveals that aging rates are not the same across countries worldwide, and that political instability, democratic decline, and social inequality play significant roles.
This global research analyzed data from around 160,000 people across 40 countries on four continents. The study was led by Dr. Agustin Ibanez, director of the Latin American Brain Health Institute, along with his international colleagues.
Age Is Not Just a Measure of Time
Age is usually measured by time—we judge it by how many years we’ve lived. But medical science says that physically and mentally, one person can be “older” or “younger” than another, even if their dates of birth are the same. To explain this difference, scientists now use the concept of the “biobehavioral age gap.”
This describes the difference between actual age and the age estimated based on physical and mental health. For example, if someone is actually 50 years old, but their age is estimated to be 60 based on various health and behavioral data, their biobehavioral gap is 10 years.
The researchers used a machine learning model to analyze participants’ data and estimate each person’s biological age, which was then compared to their real age to measure the pace of aging.
What Causes Rapid Aging?
The study found that high blood pressure, heart disease, hearing problems, and similar health factors pose the greatest risks for accelerated aging. Added to these are excess weight, alcohol consumption, sleep disorders, diabetes, and vision impairment.
But what’s surprising is that it’s not just physical factors—political and social environments also have major impacts on aging. Weak democratic institutions, restrictions on political parties’ freedoms, and curtailment of voting rights all create psychological distress, which manifests physically as faster aging.
Lead author Ibanez says, “We live in a world where political polarization, uncertainty, and despair are increasing. This has long-term effects on people’s health, yet we are not paying enough attention to it.”
Education and Awareness: Main Tools of Prevention
The most hopeful finding is that there are some ways to slow down the aging process. The research identified education as the most significant protective factor. People who are more educated typically age at a slower rate.
It’s not just education—those who can perform daily activities on their own, have a healthy brain, good memory, remain physically active, and are able to walk well tend to age more slowly.
Another important aspect of this research is that some people were found to be biologically much younger than their actual age. Analyzing these exceptional individuals’ lifestyles may help identify future interventions that could benefit everyone.
Where Does Aging Progress the Fastest?
The study found that the aging rate is highest in Egypt and South Africa in Africa, while it is the slowest in European countries. Asian and Latin American countries fall somewhere in the middle.
Political instability, restricted voting rights, income inequality, air pollution, gender inequality, and low income were all directly associated with faster aging, according to the research.
For about 21,600 participants, data was available over a four-year period. Analysis of this group found that those with a larger biobehavioral age gap suffered a faster decline in cognitive skills and ability to perform daily activities.
Why Are Studies Like This Important?
Claudia Suemoto, a geriatrics expert at the University of São Paulo in Brazil who was not directly involved in the study, says—“This research shows us how political and social structures in different regions impact people’s rates of aging. It provides a truly important global perspective.”
However, the research has some limitations. For example, important factors like smoking are measured differently in different countries, so it had to be excluded. Suemoto also noted that a four-year follow-up may not be sufficient for a slow process like aging.
A Message for Bangladesh
The findings of this research are quite significant for developing countries like Bangladesh. A large segment of Bangladesh’s population is moving toward middle age or old age. The combined effects of education rates, healthcare, social security, environmental pollution, and political stability could make controlling the rate of aging a national challenge.
Social inequality, air pollution, mental stress, and uncertain political situations put people’s physical and mental well-being at risk in countries like Bangladesh. This research has given us an opportunity to become more aware—slowing down aging requires not just medical solutions, but quality education, stable democracy, and a clean environment.
Final Thoughts
We can’t stop time or aging—but how we age and how fast it happens depend largely on our society, politics, and personal lifestyle. New studies remind us that health isn’t just about the body—society, politics, and the environment are also parts of our longevity. So, to live long and stay healthy, we need a broad perspective—where individual efforts as well as state policies play a crucial role.
Source: This report is based on research published in Scientific American and Nature Medicine.
Main article: Aging Rates Vary by Country. Politics Might Be Why – Scientific American
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