Key points from article :
A neural network can guess a person's biological age and sex by analysing their ECG.
90 per cent accuracy for age and 72 per cent accuracy for sex.
Gives the biological age after taking existing comorbidities in to account.
Used ECG data from 774,783 adult patients for this study.
Research by Mayo Clinic College of Medicine and Science, published in the Circulation: Arrhythmia and Electrophysiology journal.