I had contacted Withings after our first US users brought up this issue to me.

The reason is that the FDA (but not the EMA here in Europe) considers PWV a biomarker, which requires a medical-grade device for its measurement. The Withings scale won't be a medical device in the foreseeable future. Device registration is a very expensive process that would blow the end-user price out of the boundaries of affordability.

But the scale still records the PWV. The Withings algorithm then translates it into a range of vascular age (optimal, normal, and not optimal. This range, however, is to broad and the algorithm too insensitive to be used for daily monitoring.

With our LiLo application we pull the PWV data from the Withings server onto our own server (via API integration). We then use the raw data to translate the Withings PWV into a rate-of-aging score, the fluctuations of which we evaluate with the N-of-1 method for single subject experiments to monitor the effects lifestyl einterventions. All that is lay-user capable for DIY lifestyle medicine.

Now, here is my invitation to you:

If you want to discuss your participation as a beta-tester further, I suggest you contact me through our website’s contact form (https://www.adiphea.com/en/solutions/contact/). Your enquiry will land directly in my e-mail. Nobody else will see it.

Just let me know a bit about your medical background and what kind of lifestyle interventions you have in mind for testing on yourself.