> Once we have the technology to accurately and passively measure blood pressure throughout the day, preventive medicine will become much easier

How? Do we have any idea what we would do with that data? AFAIK, all treatments we currently have aren’t suited for treating short-duration spikes in blood pressure (do they even need treatment? I wouldn’t know).

Also, why would we need preventive medicine for most people with hypertension? https://en.wikipedia.org/wiki/Hypertension#Prevention:

“The 2004 British Hypertension Society guidelines proposed lifestyle changes consistent with those outlined by the US National High BP Education Program in 2002 for the primary prevention of hypertension:

- maintain normal body weight for adults (e.g. body mass index 20–25 kg/m2)

- reduce dietary sodium intake to <100 mmol/ day (<6 g of sodium chloride or <2.4 g of sodium per day)

- engage in regular aerobic physical activity such as brisk walking (≥30 min per day, most days of the week)

- limit alcohol consumption to no more than 3 units/day in men and no more than 2 units/day in women

- consume a diet rich in fruit and vegetables (e.g. at least five portions per day);

- Stress reduction”