How Do Weight Loss Injections Benefit Heart Health? Treated UK

Can weight loss injections improve your heart health?

GLP-1 receptor agonists are weight loss medicines, but their benefits go beyond this. Research shows they can have wider benefits on heart health, and reduce the risk of heart failure, strokes, and blood clots.

Medically reviewed by

Alexandra Cristina Cowell, Writer & Clinical Content Reviewer

The indirect benefits (from losing weight)

Losing weight naturally lowers blood pressure and improves cholesterol levels. This is because the heart doesn't need to work hard to pump blood around your body.

Weight loss also reduces bad cholesterol (LDL) and increases good cholesterol, which decreases the overall risk of blood clots and heart disease.

Additionally, a healthier diet during weight loss can help decrease inflammation and reverse insulin resistance. This improves blood sugar control, enhances insulin sensitivity, and reduces the risk of type 2 diabetes. These changes further support heart health.

The direct benefits (from the medication itself)

Research shows that GLP-1s can have positive effects beyond what’s expected for weight loss. One study found that GLP-1s reduced the risk of cardiovascular events by 14% in patients with type 2 diabetes or pre-existing cardiovascular illness.

Likewise, another study showed that semaglutide reduced cardiovascular events, such as heart failure, heart attack, and death related to obesity.

Patients who lost more than 10% of their total body weight had the highest positive impact on their heart health.

These benefits weren't just limited to people with pre-existing heart conditions; even those with no history of heart issues saw significant improvement.

Here’s how GLP-1s can improve heart health:

Reduced inflammation. GLP-1s can directly reduce inflammation by promoting anti-inflammatory molecules and indirectly by weight loss. This helps improve cardiac function.
Improved blood vessel function. GLP-1 can enhance endothelial function, which is the ability of blood vessels to relax and maintain healthy blood flow. It does this by promoting the release of nitric oxide, a chemical that signals blood vessels to widen. When blood vessels relax, blood flows more smoothly, which can help lower blood pressure.
Promote plaque stability. Plaque buildup increases heart attack risk and raises blood pressure. GLP-1s can reduce plaque formation and make plaques more stable. This can reduce the likelihood of harmful blood clots that can have a limiting effect on oxygen flow to the brain.