Can Metformin Help You Live Longer? A Study in Review

Metformin is a prescription medication with decades of human safety data, and new research suggests it may be one of the strongest longevity tools available. A 2025 study using data from the Women’s Health Initiative found that Metformin use was associated with a 30% lower risk of dying before age 90 in women with type 2 diabetes.

This post breaks down exactly what that study found, what the results may mean for people without diabetes, and how Metformin fits into a broader longevity approach.

Key takeaways:

• A Women’s Health Initiative study linked Metformin use to a 30% lower risk of dying before age 90
• Metformin targets multiple aging mechanisms at once, including AMPK activation, inflammation, and insulin sensitivity
• The TAME trial is testing Metformin as a longevity treatment in people without diabetes, which may lead to FDA approval
• Benefits may vary based on metabolic baseline, and lab testing can help personalize the approach

Can Metformin Help You Live Longer?

According to this 2025 study, Metformin may reduce the risk of death before age 90 by up to 30%.

Using data from the Women’s Health Initiative, a long-term US study tracking over 161,000 postmenopausal women since the 1990s, researchers focused on a subgroup of 438 women. This group were all at least 60 years old and all had type 2 diabetes. The participants took either Metformin or sulfonylurea, another popular diabetes medication.

The researchers found that those taking Metformin had a 30% lower risk of dying before age 90 when compared with the sulfonylurea group. In other words, Metformin improved the chances of living to 90 by 30%.

How Does Metformin Support Longevity?

Metformin is thought to work on several biological drivers of aging at once. Research suggests it activates AMPK, an enzyme involved in cellular energy balance, which may help cells manage energy more effectively as they age. It may also lower chronic inflammation and oxidative stress, two processes linked to age-related decline, while improving insulin sensitivity so the body can better regulate blood sugar. Together, these mechanisms are why Metformin is often discussed as a candidate longevity medication instead of simply a diabetes treatment.

Mechanism	How It Works	Potential Aging Benefit
AMPK Activation	Activates an enzyme that helps cells manage energy more effectively as they age	May slow age-related cellular energy decline
Inflammation Reduction	Lowers chronic low-grade inflammation associated with age-related disease	May reduce a key driver of heart disease, cognitive decline, and cancer risk
Insulin Sensitivity	Improves how the body regulates blood sugar	May reduce metabolic risk factors associated with accelerated aging
Oxidative Stress Reduction	Lowers reactive oxygen species that damage cells over time	May protect cellular integrity and reduce cumulative DNA damage

What Do the Results Mean?

This is the first study designed to determine whether Metformin is associated with exceptional longevity, which is typically defined as living to 90-100 years or more.

But there were some caveats to the study. Only women participated, all had type 2 diabetes, and there was no placebo group. Overall, this was an observational study, rather than a full-blown clinical trial. For these reasons, researchers can’t conclude confidently that Metformin causes exceptional longevity.

But causality was beyond the scope of the study, and the results still mark an incredible milestone for Metformin and longevity science. This study focuses uniquely on whether Metformin use can help users live past 90, an objective marker of longevity, and the results seem to answer a resounding “yes.”

Now, there’s little doubt in the scientific community that Metformin is a potential candidate as a longevity medication. Earlier studies show that Metformin may lower cancer and heart disease risk, while other studies suggest that Metformin may reduce the risk of cognitive decline.

Meanwhile, the long-term TAME trial means to show once and for all that prescribers may be able to repurpose Metformin as a gerotherapeutic medication. This could pave the way for Metformin to become the first FDA-approved longevity medication.

What Does This Mean for Me?

Though this study was only for women with type 2 diabetes, there’s a wealth of science supporting Metformin for its potential longevity benefits for healthy individuals.

This new study offers compelling, real-world support for Metformin as a gerotherapeutic, or a longevity medication. Though scientists need more studies, these findings mark a powerful step forward for longevity science.

How Can You Personalize Your Metformin Approach?

How much someone benefits from Metformin may depend on their starting metabolic health. Research suggests that people with well-optimized blood sugar, blood pressure, and cholesterol levels may see fewer additional benefits from Metformin. Those with metabolic risk factors may benefit more from its insulin-sensitizing and anti-inflammatory effects. Longevity researchers have discussed how Metformin’s effects can vary based on an individual’s metabolic profile. That is why tools like a Continuous Glucose Monitor or Core Longevity Panel can help personalize the approach.

Some experts also note that Metformin may interact with pathways involved in muscle growth. People focused on building strength through intense resistance training sometimes consider adjusting their dose timing around workouts. For most people pursuing general health and longevity goals, though, Metformin can fit easily alongside a regular exercise routine. As always, work with your provider to determine the approach that best fits your goals.

Even if you don’t have diabetes, Metformin can help optimize your health for years to come. You can request Metformin online through AgelessRx with a licensed clinician review.

We believe in empowering people to take control of their health, giving you access to the tools you need to improve both how long you live and how healthy you live. That means making it easy to request Metformin and manage your prescription. You’ll have US-licensed clinicians and personalized medical support at your fingertips.

If you’re curious about what Metformin can do for your long-term health, why wait? Just because aging is inevitable, doesn’t mean we can’t control how we age. Get started with a free medical intake today to see if Metformin is right for you. 

Note: The above statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.