A large analysis of randomized trials presented at ESC Congress 2026 reveals that cardiovascular protection from blood pressure medication heavily depends on consistent usage. Researchers evaluated data from 91,339 participants across nine clinical trials, defining higher adherence as taking at least 80 percent of assigned treatment. The study demonstrated that consistent adherence significantly declined over time, dropping from 88 percent in the first year to 79 percent by the fifth year. Participants with higher adherence experienced a greater reduction in systolic blood pressure of 5.2 mmHg and an 11 percent reduction in major cardiovascular events compared to alternative treatments. Conversely, patients with lower adherence showed negligible blood pressure improvements and no significant reduction in cardiovascular events, reinforcing the medical principle that drugs do not work if patients fail to take them regularly. Experts recommend incorporating routine adherence assessments into hypertension care, alongside simplifying dosing schedules, combining multiple medications into single pills, and utilizing longer-acting drugs to improve long-term patient outcomes.
