Why are biological age calculators lying?

There are at least three reasons why you shouldn’t trust biological age calculators:

  1. By testing the age of your blood - you will get the age estimation of your blood. By checking your teeth or bones racemization level - you will get the age of your skeleton, etc. Yes, that’s right, organs are aging with a different pace: https://www.sciencedirect.com/science/article/abs/pii/S1550413119302505

  2. Some organs might age quite independently of each other:

…blood cells from adult donors transferred to a child stay older

  1. The biological age estimation is population-dependant, i.e. requires taking into account genetic and epigenetic (lifestyle, diet, etc) traits of a particular population: https://www.ncbi.nlm.nih.gov/pubmed/29340580