Repeated Genetic Test Saliva Shows Your Physical Age

Repeated Genetic Test Saliva Shows Your Physical Age.
A rejuvenated study that uses a saliva sample to predict a person's age within a five-year collection could prove useful in solving crimes and improving patient care, University of California, Los Angeles geneticists say. Their examination focuses on a process called methylation, a chemical modification of one of the four edifice blocks that make up DNA. "While genes partly condition how our body ages, environmental influences also can change our DNA as we age.

Methylation patterns shift as we grow older and furnish to aging-related disease," principal investigator Dr Eric Vilain, a professor of Possibly offensive manlike genetics, pediatrics and urology, said in a UCLA news release. He and his colleagues analyzed saliva samples from 34 pairs of similar male twins, aged 21 to 55, and identified 88 sites on their DNA that strongly linked methylation to age.

They replicated their findings in 31 men and 29 women, superannuated 18 to 70, in the composite population. The yoke then created a predictive model using two of the three genes with the strongest age-related coupling to methylation.