A Boston tech company says its wristbands can estimate blood pressure. The FDA’s not so sure

Boston tech company Whoop is in a fight with the Food and Drug Administration.

Whoop makes wristbands that monitor all sorts of health indicators: like sleep, heart rate and stress levels.

In July, the FDA sent the start-up a warning letter stating they did not approve of Whoop's latest features that estimates blood pressure. Whoop responded that "they respectfully disagree" and would continue to market the tech.

Scott Kirsner, a columnist from our editorial partner MassLive, joins WBUR's Morning Edition to discuss the feud. Kirsner says the company might have an unexpected ally in Secretary of Health and Human Services Robert F. Kennedy, Jr.