Does blood pressure change during weight loss?

Weight loss is one of the lifestyle changes consistently associated with lower blood pressure, and it appears in prevention guidance alongside reducing salt, moving more and limiting alcohol.

That is generally good news with one practical consequence. If you already take medicine for blood pressure and your blood pressure falls as you lose weight, the amount you were prescribed may no longer match what you need. Dizziness or light-headedness on standing can be a sign of that.

This is a monitoring question rather than something to act on alone. Keeping a consistent home log and bringing it to your prescriber is what makes an adjustment possible at the right time. Changing a blood-pressure medicine yourself is not safe.