a) Age 18-65 b) Hypertension with PA diagnosed using Endocrine Society's 2025 criteria c) Stable medical therapy with no change in dose/agent in prior 6 weeks d) BP uncontrolled, clinic \> 140/90 or ABPM mean \> 135/85 e) Dietary sodium moderate or higher (\> 128 mmol/d) f) Subject owns iPhone (12-16) or Android and willing to install HiLo app
You may not be if
1. BP \> 160/105 in clinic or \> 155/100 on ABPM
2. Planning adrenalectomy or other surgery during trial
3. Recent hospitalization for any reason, in the past 3 months
4. Confirmed or suspected MI, angina, CHF or arrhythmia diagnosis in the past 6 months
5. CKD, eGFR \< 30 ml/min/m2
6. Pregnancy, planned pregnancy, or non-use of contraceptive during study
7. Recent hypotensive event/syncope in the past 3 months
8. Any complex medical condition where sauna exposure is not advised
9. Planning major dietary change
10. History of medication non-adherence
11. Night shift worker / at work after 2000h
12. Planned vacation/absence during 6-week study
13. Inability to read English or consent to participation
Clareo Health | Regular Sauna Use to Lower Blood Pressure in Primary Aldosteronism
