Biological tests, which featured on the latest season of Keeping Up With the Kardashians, can, in theory, distinguish between your chronical and biological age. Biological tests, which featured on the latest season of Keeping Up With the Kardashians, can, in theory, distinguish between your chronical and biological age.
Can the simple saliva tests loved by Kim Kardashian REALLY determine your ‘biological age’? Experts give their verdict as companies launch DIY kits
