People are increasingly turning to biological age tests because these tests help them better understand their health, but scientists say the science is still in its developing stages. The research team from Northwestern University Feinberg School of Medicine states that these tests determine the rate of cellular aging, which does not correspond to chronological time.
The development of epigenetic clocks and direct-to-consumer testing kits has created a thriving international market for biological age testing, which has now become a fast-growing industry.
What biological age really measures?
Human biological age shows actual internal physical changes resulting from genetic factors, lifestyle choices, and environmental conditions. Northwestern University President Douglas Vaughan explains that these tests use DNA-based markers to assess wear and tear in the body.
Scientists depend on epigenetic clocks that evaluate chemical DNA modifications. Researchers such as Daniel Belsky describe them as instruments that measure how quickly a person ages, comparable to a speedometer instead of an odometer.
With the development of biological age tests, epigenetic clocks have become essential tools for this emerging scientific field.
The results of their studies show significant differences, because, according to experts, their tests have become very popular. Steve Horvath, who established epigenetic aging studies as a research field, adds that most tools being developed today are still more useful for laboratory research than for everyday human use.
People experiencing illness or stress will notice that their results change due to these temporary conditions. Cleveland Clinic researcher Christopher Hine warns that a single assessment provides only limited information that could result in undue stress or drastic changes in behavior.
The market for biological age testing is expanding rapidly and more and more companies are introducing saliva and blood-based test kits. The tests should not be used as a substitute for standard health assessments according to expert recommendations.
