Repeated Genetic Test Saliva Shows Your Physical Age

Repeated Genetic Test Saliva Shows Your Physical Age.
A unheard of prove that uses a saliva sample to predict a person's age within a five-year file could prove useful in solving crimes and improving patient care, University of California, Los Angeles geneticists say. Their check focuses on a process called methylation, a chemical modification of one of the four construction blocks that make up DNA. "While genes partly figure 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 man genetics, pediatrics and urology, said in a UCLA news release. He and his colleagues analyzed saliva samples from 34 pairs of equivalent 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, old 18 to 70, in the familiar population. The span then created a predictive model using two of the three genes with the strongest age-related relation to methylation.