Weight-loss medications could help reduce blood pressure, study suggests

 A meta-analysis of 32 phase 3 clinical trials, involving more than 43,000 adults with overweight or obesity, found that newer anti-obesity medications were associated with significant reductions in blood pressure.

• Participants taking the medications lost an average of 10.9% of their body weight and experienced an average 5.2 mmHg reduction in systolic blood pressure compared with placebo.
• Results suggest that every 1% reduction in body weight was linked to a 0.34 mmHg drop in systolic blood pressure, with weight loss explaining roughly 77% of the blood pressure-lowering effect.
• The findings suggest that modern obesity drugs, such as GLP-1 drugs, may provide cardiovascular benefits beyond weight loss alone, although further studies are necessary.

Obesity is a chronic conditionTrusted Source that affects more than two in fiveTrusted Source adults in the United States. The main treatment for obesity is sustained weight loss, which typically involves lifestyle modifications, and may also include certain medications.

Anti-obesity medicationsTrusted Source are drugs that can aid in weight loss, primarily by curbing appetite, increasing feelings of fullness, or altering fat absorption.

There is a growing demand for weight-loss drugs, and guidelines highlight the role of certain medications, such as glucagon-like peptide-1 (GLP-1) receptor agonistsTrusted Source, in treating obesity.

Modern obesity medications may offer an additional cardiovascular benefits beyond weight loss, such as helping to manage high blood pressure, or hypertension.

Obesity and hypertension frequently occur together and significantly increase the risk of cardiovascular disease, stroke, kidney disease, and premature death. Current medical guidelinesTrusted Source already recommend weight management as a key strategy for controlling hypertension.

Now, a study presented at the European Congress on Obesity 2026 by researchers from Leiden University Medical Center and University Health Network, in The Netherlands, suggests modern obesity medications may have a larger role in cardiovascular risk reduction than previously appreciated.

Findings from the large meta-analysis — which are yet to appear in a peer-reviewed journal — indicate that greater weight loss achieved with newer anti-obesity medications was closely associated with reductions in systolic blood pressure.

How much did blood pressure change?

Researchers analyzed data from 32 phase 3 clinical trials involving 43,618 adults with overweight or obesity. Participants had an average age of 54 years, and average body mass index (BMI) of 35.5, with nearly 60% living with hypertension and almost 10% living with type 2 diabetes.

There was an even split of male and female participants, the median treatment duration was 66 weeks, and the baseline systolic blood pressure was 128 millimeters of mercury (mm Hg).

Systolic blood pressureTrusted Source refers to the top number in a blood pressure reading and measures the pressure against the artery walls when the heart is pumping blood around the body.

The American Heart Association (AHA)Trusted Source recommends a target systolic blood pressure below 120 mm Hg, with most guidelines defining hypertension as consistent systolic readings of 130 mm Hg or higherTrusted Source.

Across all studies, participants taking obesity medications lost an average of 10.9% of their body weight compared with placebo. This was accompanied by an average reduction of 5.2 mmHg in systolic blood pressure.

Notably, the analysis found that every 1% reduction in body weight was associated with a 0.34 mmHg decrease in systolic blood pressure.

Mir Ali, MD, bariatric surgeon, bariatric medicine specialist and medical director of MemorialCare Surgical Weight Loss Center at Orange Coast Medical Center in Fountain Valley, CA, who was not involved in the study, told Medical News Today he was not surprised by the association.

“These results are not surprising to me; as a bariatric surgeon, I have seen the improvement in hypertension (as well as diabetes and many other conditions) in our post-surgical weight loss patients,” said Ali.

“Any improvement in blood pressure can help reduce morbidity associated with hypertension; furthermore, many patients can have their blood pressure medications reduced with even modest improvements in blood pressure,” he noted.