"When does aging and physical deterioration begin?" is a question that has puzzled scientists for decades, as signs such as wrinkles and gray hair are clear indicators of aging.
However, recent studies suggest that blood tests can provide a highly accurate estimate of age. A new study used blood tests to determine the precise time at which a person is considered "old."
When Does Aging Begin?
The results showed that major aging-related changes typically occur at ages 34, 60, and 78. Furthermore, researchers confirmed that the average person begins to experience physical deterioration starting at age 34.
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The results of this important research demonstrate that the aging process involves acceleration at various stages of life.
Analysis Defines Aging
The period from 34 to 60 represents the beginning of adult life, while the period from 60 to 78 represents late maturity, and the period after 78 is classified as "senile."
For this study, researchers used plasma samples from the blood of more than 4,200 healthy volunteers, aged 18 to 95.
Chronological Age Prediction
According to the research team from the National Institute on Aging, the clock was able to accurately predict the chronological age of the participants, within specific criteria.
The most accurate predictions were based on only 373 proteins out of the approximately 3,000 proteins used by the clock.
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What's interesting about the study is that the "protein clock" accurately predicted the chronological age of four groups of people who did not participate in the original experiment. Even more impressive is that these accurate age estimates were achieved using only nine of the most significant proteins within the clock, indicating the model's effectiveness even when the number of biomarkers used is reduced.
Developing a Blood Test
Furthermore, researchers discovered that those who appeared biologically younger than their actual age, as reflected in their blood proteins, also demonstrated superior cognitive and physical performance.
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These findings suggest the possibility of developing a blood test that can identify individuals who are biologically aging faster than others.
Doctors confirm that this could be useful in identifying those at greater risk of developing age-related health complications, such as cardiovascular disease, Alzheimer's disease, and osteoporosis, early in life.
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