When Parents Live to 100: How Their Children Differ From Others

People who have at least one parent who lived to the age of 100 appear to have a significant advantage in both longevity and health. They are less likely to die prematurely and are substantially less likely to develop cardiovascular disease and hypertension. These differences persist even after accounting for lifestyle, education, and socioeconomic status.

This is the conclusion of a study published in JAMA Network Open. The researchers analyzed data from three large, long-term studies: LonGenity, the New England Centenarian Study, and the UK Biobank.

A total of 2,329 offspring of centenarians and 2,703 people in a control group were included in the analysis. The first group had at least one parent who had reached the age of 100. Participants in the control group either had parents who lived no longer than 85 years or were spouses of centenarians’ children.

The results were striking. Compared with people whose parents had died at substantially younger ages, the offspring of centenarians had:

• 42% lower risk of death;

• 33% lower risk of cardiovascular disease;

• 32% lower risk of hypertension.

Many health problems also developed later in life. On average, death occurred about three years later, while hypertension developed approximately five years later.

The researchers specifically examined whether the advantage could be explained by a healthier lifestyle. They accounted for smoking, alcohol consumption, physical activity, diet, education, and socioeconomic status. However, the health advantages seen among the offspring of centenarians largely remained.

This suggests that the benefits may not be attributable solely to lifestyle habits. They may also reflect inherited biological characteristics that help the body maintain health for longer.

However, the researchers did not find evidence of universal protection against all age-related diseases. For example, there was no convincing association with a lower risk of stroke: the effect was observed in only two of the three studies. The offspring of centenarians also showed no clear advantage when it came to cancer risk.

The authors emphasize that the study was not designed to identify specific genes or other inherited traits responsible for longevity. Nevertheless, families in which several generations have unusually long lifespans could provide a valuable “window” into the biology of healthy aging.

If researchers can identify the mechanisms that allow centenarians to remain healthy for longer, it may eventually be possible to replicate some of these effects through medical treatments, including in people who did not inherit such characteristics.

At the same time, the researchers stress that good genetics do not eliminate the importance of lifestyle. A healthy diet, regular physical activity, and avoiding smoking remain important regardless of how long a person’s parents lived.