Study Links Poverty and Race to Faster Biological Aging

A large international meta-analysis published in Nature Human Behaviour says social conditions are not just background to life, they actively shape how fast the body ages, starting early in life. The study argues that poverty, discrimination and social deprivation leave a biological mark and accelerate aging, making inequality not only an economic or moral issue but also a medical one.

The research was led by teams at the Max Planck Institute for Human Development in Berlin and Columbia University in New York. It reviewed 1,065 measures from 140 studies, covering about 65,919 participants from newborns to age 86, making it one of the most comprehensive examinations yet of the link between social conditions and biological aging.

To assess aging, the researchers used epigenetic clocks, biological tools that measure chemical changes in DNA to estimate a person’s biological age and pace of aging. They found that people living in harsher social conditions consistently showed faster biological aging. First-generation clocks, designed mainly to estimate chronological age, showed only a weak connection, while newer clocks that also measure disease risk, mortality and aging speed showed a much stronger link.

US data showed that Black participants aged biologically faster than white participants, especially on the more advanced measures. Latino populations also showed disparities, though smaller ones. The study also found lasting effects from childhood conditions, with adults who grew up in deprived environments showing signs of accelerated aging decades later, and evidence of these effects already visible in children. The findings, drawn from data in 23 countries, could help governments test whether social policies such as anti-poverty programs and education reforms improve health by slowing biological aging.