GLP-1 and Blood Pressure: What the Research Shows

GLP-1 and Blood Pressure: What the Research Shows

2025-09-15 · 5 min read

High blood pressure affects over half of people with obesity. GLP-1 medications consistently show reductions in systolic and diastolic blood pressure — and for many users, this benefit appears faster than the weight loss itself.

How Much Does Blood Pressure Improve?

In major trials, GLP-1 agonists reduced systolic blood pressure by 3–6 mmHg on average. This may sound modest, but at a population level, a 5 mmHg reduction in systolic BP reduces stroke risk by ~14% and coronary heart disease risk by ~9%.

Why Does It Improve?

  • Weight loss reduces the workload on the heart and vascular resistance
  • GLP-1 receptors in the kidneys affect sodium excretion (natriuresis)
  • Reduced inflammation improves arterial flexibility
  • Improved insulin sensitivity reduces sympathetic nervous system overactivation
  • GLP-1 may have direct vasodilatory effects

Monitoring Blood Pressure on GLP-1

  • Check BP at home 2–3 times per week initially — keep a log
  • Review your antihypertensive medication with your doctor as BP improves
  • Be aware of possible hypotension (low BP) if you're on multiple BP medications
  • Report dizziness or lightheadedness immediately

Adjusting Blood Pressure Medication

Many people on GLP-1 therapy are able to reduce or eliminate blood pressure medications over time. Never adjust these yourself — always work with your prescriber. Stopping BP medications abruptly can be dangerous.

Log blood pressure readings in ShotFlow's notes alongside your weight and dose data. Sharing this trend with your doctor at your next appointment gives them the evidence they need to safely reduce your hypertension medications if appropriate.

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