40+ years later, we're still selling and relying on this very basic, unreliable medical reading

And we wonder why people are skeptical of medicine--and why Black women in particular are angry. If we can't trust medicine to fix something this obvious, what can we trust from our healthcare?

Excuse me for a rant here. I won’t do it often, but this one breaks my heart. I’ve been a provider; the thought of doing harm without knowing it is terrible. The fact that our health system has knowingly ignored the unreliability of this very simple measurement of wellbeing every. single. day. for almost five decades is mortifying.

Until recently, the d…