A large cross-sectional study published this month in JAMA Network Open found that extreme heat was associated with small, short-term reductions in blood pressure among adults receiving outpatient care. The analysis included 2,554 community health centers across 40 states, examining more than 4.2 million summer encounters from 2019–2023. On days of extreme heat, patients’ recorded adjusted systolic blood pressure was 0.7 mm Hg lower and diastolic blood pressure was 0.3 mm Hg lower than the …
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