This brings up a valid point about health technology and "biological age". As (usually wealthy) people are increasingly able to delay the onset of senescence,

This brings up a valid point about health technology and "biological age". As (usually wealthy) people are increasingly able to delay the onset of senescence, the law is going to have issues with time defined "age" which represents capability. For example having to retest every 5 years maybe unneeded if people are living to 125 and remaining healthy along the way.