HRV predictive value in cardiac health

thanks for your Q about HRV (Heart Rate Variability) and it's predictive value in assessing cardiac health. High HRV is generally considered better than low when it comes to overall health. However, because there are many things that can affect it, it is hard to “hang your hat” on it a sole and independent indicator. I think more data will come out over time before it establishes its approrpiate place