What if a medication already sitting in your medicine cabinet could hold clues to a longer, healthier life? Scientists are investigating several existing drugs that appear to influence the biological processes behind ageing, raising the possibility that some treatments could eventually help people remain healthier for longer.
Some of these medications are already prescribed for conditions such as high blood pressure and type 2 diabetes. Others are being studied because of their effects on damaged cells and other biological changes associated with ageing. Early research has produced fascinating results, although much of the evidence still comes from laboratory animals rather than humans.
Scientists Are Changing How We Think About Ageing
Ageing affects almost every part of the human body, gradually changing how cells, tissues, and organs function. As the years pass, cells become less efficient, inflammation can increase, and the body’s ability to repair damage may decline. These changes contribute to the growing risk of chronic illnesses later in life.
Heart disease, cancer, arthritis, and neurodegenerative conditions become increasingly common with age. Scientists believe several of these conditions share underlying biological processes, which has encouraged researchers to investigate whether ageing itself could become a target for medical treatment.
This research focuses on something called healthspan, which describes the number of years a person lives in relatively good health. While lifespan measures how long someone lives, healthspan considers how much of that time they spend physically active and free from serious illness or disability.
The distinction matters when considering the future of healthcare. Someone who lives to 95 but spends their final 20 years struggling with multiple chronic conditions may have a very different experience from someone who remains independent and active well into their 80s.
Geneticist Dr. Nir Barzilai, director of the Institute for Aging Research at Albert Einstein College of Medicine, has spent decades studying the biological factors associated with healthy longevity. His work examines whether medications and other interventions could influence the ageing process and delay the development of several diseases.
Barzilai has explained his preferred approach using a distinction between two related concepts: “Longevity is the outcome. Geroscience is the mechanism.” Geroscience examines how biological ageing contributes to diseases that become more common as people get older.
Researchers are increasingly interested in this approach because treating the underlying processes of ageing could potentially help address several health problems simultaneously. Rather than developing separate treatments for every age-related condition, scientists want to understand whether certain biological mechanisms can be influenced before multiple illnesses develop.
Rilmenidine Shows Interesting Results In Longevity Research
One medication attracting attention is rilmenidine, a drug already used to treat high blood pressure. Researchers at the University of Liverpool investigated whether this existing medication could influence biological ageing and potentially extend lifespan.
Their findings, published in the journal Aging Cell in 2023, showed that rilmenidine extended the lifespan of laboratory worms called Caenorhabditis elegans. Researchers also observed improvements in several health-related markers in the treated animals, including those associated with the effects of ageing.
The findings attracted attention because rilmenidine appeared to produce biological effects resembling those associated with calorie restriction. This is particularly interesting because calorie restriction has been studied for decades as a possible way to influence ageing.
How Calorie Restriction Influences Biological Ageing
Calorie restriction involves reducing calorie intake while maintaining adequate nutrition. Research involving several laboratory species has associated this approach with longer lifespans and delayed age-related changes.
Scientists believe some of these effects involve changes in metabolism and oxidative stress. Oxidative stress occurs when unstable molecules damage cells and contribute to processes associated with ageing and chronic disease.
However, translating calorie restriction findings into practical recommendations for humans is complicated. Human studies have produced mixed results, and restrictive eating can create nutritional challenges if people do not receive sufficient energy and essential nutrients.
Researchers are therefore interested in finding medications that could reproduce some biological benefits associated with calorie restriction. Such treatments might eventually offer another way to influence ageing without requiring people to follow highly restrictive eating plans.
The Nish-1 Receptor Could Hold Important Clues
The Liverpool researchers linked rilmenidine’s effects to a receptor called nish-1, which belongs to the I1-imidazoline receptor family. Their findings suggest that this receptor could play an important role in the biological responses associated with the medication.
This gives scientists a potential target for further investigation. Understanding how rilmenidine interacts with this receptor could help researchers identify other compounds capable of producing similar effects.
Professor João Pedro Magalhães, who led the study, explained, “With a rapidly aging population, the advantages of delaying aging, even modestly, are enormous.”
He also highlighted the potential of repurposing existing medications to investigate improvements in both lifespan and healthspan. However, the findings do not establish that rilmenidine will extend human life, and further research is necessary before any anti-ageing benefits can be confirmed.
Metformin Could Influence Multiple Age-Related Diseases
Another medication attracting attention in longevity research is metformin, a widely prescribed treatment for type 2 diabetes. It helps regulate blood glucose levels, but researchers have also investigated whether it could influence biological processes associated with ageing.
Several observational studies have suggested that people with diabetes taking metformin may experience certain health advantages compared with some other groups. Researchers have also examined its potential relationship with cardiovascular disease, cancer, and other conditions associated with ageing.
These findings have encouraged scientists to investigate whether metformin could have applications beyond its established use in diabetes treatment. Dr. Nir Barzilai has been particularly interested in its potential to influence several biological processes linked to age-related decline.
What The TAME Trial Was Designed To Investigate
Barzilai and his colleagues developed a proposed clinical study called Targeting Aging with Metformin, commonly known as the TAME trial. Its objective was to investigate whether metformin could delay the development of multiple age-related conditions rather than focusing on one individual disease.
The proposed study involved approximately 3,000 adults between 65 and 80 years old who did not have diabetes. Participants would receive either metformin or a placebo over four years, while researchers monitored the development of age-related conditions.
These included conditions such as dementia, stroke, and cardiovascular disease. Researchers also planned to examine biological markers that could provide information about the ageing process.
The study was designed around an important question: Could one medication influence several age-related health problems by targeting shared biological processes?
A successful result could help establish a new direction for preventative medicine. Doctors might eventually have better ways to identify people at risk of multiple age-related conditions and investigate treatments that address those risks together.
However, the reference material reports that the proposed trial had yet to launch. Its design should therefore not be mistaken for completed clinical evidence, and metformin has not been established as an anti-ageing medication.
For now, metformin remains a prescription treatment used for established medical indications. People should not start taking it for longevity purposes without an appropriate medical reason and professional guidance.
Senolytic Drugs Target Damaged Cells That Accumulate With Age
Another promising area of longevity research focuses on senescent cells. These are ageing or damaged cells that have stopped dividing but remain inside the body instead of being cleared away.
In younger people, the immune system helps remove these cells before they accumulate in significant numbers. As the body ages, however, the immune system may become less effective at clearing them.
Senescent cells can release inflammatory substances that affect surrounding tissues. Researchers believe this process contributes to several age-related health problems, making these cells an important target for investigation.
Drugs designed to remove senescent cells are called senolytics. Scientists are studying whether eliminating these damaged cells could help preserve tissue function and delay certain aspects of physical decline.
Two Compounds Researchers Are Investigating
One research approach involves combining two compounds: quercetin and dasatinib. Researchers have investigated their potential to remove senescent cells in laboratory animals.
Quercetin is a natural plant pigment found in various fruits and vegetables. It is also sold as a dietary supplement, making it relatively accessible compared with many experimental compounds.
Dasatinib is a prescription medication approved for treating certain blood cancers. Its established medical use makes it particularly important to distinguish its approved applications from experimental longevity research.
In animal studies led by Ming Xu and colleagues, combinations of senolytic drugs helped remove damaged cells and improve several measures of physical health. Researchers observed stronger muscles, greater activity, and longer survival in treated mice.
Some experiments produced encouraging results even when treatment began late in the animals’ lives. This suggested that targeting senescent cells might still influence aspects of ageing after physical decline had already begun.
Xu has described the effects of these cells using a comparison with a spreading fire. He explained, “It’s like a fire that spreads.”
His research suggests that even a relatively small population of senescent cells can have damaging effects on surrounding tissues. Scientists are now investigating whether similar approaches could produce meaningful health improvements in humans.
However, animal findings cannot establish that taking quercetin supplements or dasatinib will slow human ageing. Dasatinib can cause serious side effects, and it must only be used under appropriate medical supervision.
Scientists Are Searching For Faster Ways To Measure Ageing
One of the biggest obstacles in longevity research is the amount of time required to study ageing. Humans take decades to develop many age-related conditions, meaning researchers may need to follow participants for years before determining whether a medication has produced meaningful benefits.
These studies are also expensive and difficult to organise. A treatment that appears effective in laboratory animals may still fail to produce similar results in humans, requiring scientists to conduct extensive testing before drawing conclusions.
Researchers are therefore investigating biological indicators that could help measure how quickly someone is ageing. These indicators are known as aging rate indicators, or ARIs.
They involve measurable changes in blood and body tissues that might reveal whether biological ageing is progressing more slowly or rapidly. Scientists hope these measurements could help identify promising treatments without waiting for the entire lifespan of an animal or human participant.
Why Blood Tests Could Become Important
Research involving slow-ageing mice has identified several potential indicators that scientists can measure in different parts of the body. These include changes in blood plasma, muscle tissue, liver tissue, and immune cells.
Some of the indicators being investigated include:
- Blood plasma proteins: Certain proteins may change as biological ageing progresses, potentially providing useful information about the body’s condition.
- Lipids: Changes in specific fats could help researchers identify patterns associated with slower or faster ageing.
- Modified amino acids: These molecules may provide additional clues about metabolic changes occurring within the body.
- Immune cell activity: Changes in immune function could help explain why the body becomes less effective at dealing with damaged cells as it ages.
- Tissue-related changes: Measurements involving muscle, liver, and other organs could help scientists understand how different biological systems respond to potential treatments.
If researchers can identify reliable indicators in humans, they may be able to conduct smaller studies that examine whether potential medications influence biological ageing. Treatments producing encouraging results could then move into longer clinical trials examining physical fitness, memory, and disease risks.
This approach could make longevity research more efficient and potentially reduce the cost of investigating new treatments. However, scientists still need to establish how reliably these indicators predict meaningful improvements in human health.
Why Developing Anti-Ageing Medication Remains Difficult
Despite encouraging discoveries, developing an effective anti-ageing medication remains a complicated process. The biggest challenge is that findings from laboratory animals do not automatically translate into successful human treatments.
A medication that extends the lifespan of a worm or mouse may interact differently with the human body. Researchers must also establish appropriate doses, identify possible side effects, and determine which groups of people might benefit.
Another challenge involves the way medical regulators classify ageing. Most medications are approved to treat specific medical conditions, while ageing affects multiple biological systems simultaneously.
Researchers such as Barzilai believe recognising ageing as a treatable medical indication could make it easier to conduct large clinical trials. Such a change could also encourage greater investment in treatments designed to delay several age-related conditions.
Funding creates another obstacle. Many potential candidates are inexpensive generic medications that have been available for years, meaning pharmaceutical companies may have limited financial incentives to fund lengthy clinical trials.
This creates an unusual situation in which medications with established medical uses may have interesting potential applications that remain insufficiently investigated. Without sufficient funding, researchers cannot establish whether these compounds genuinely improve healthspan in humans.
There are also ethical and practical questions surrounding longer lifespans. Scientists must consider how future treatments could affect healthcare systems, access to medication, and the quality of life experienced by people in later years.
The central challenge remains demonstrating that a treatment helps people stay healthier for longer, rather than simply changing laboratory measurements or extending survival without improving quality of life.
Healthy Habits Remain The Most Practical Way To Support Longevity
While scientists investigate medications that could influence biological ageing, you already have several ways to support your health as you get older. Lifestyle habits cannot guarantee a longer lifespan, but established evidence supports their role in reducing the risk of many chronic conditions.
You also do not need an expensive wellness programme or a complicated daily routine to start making healthier choices. Consistency with basic habits can help support your physical health and maintain independence as the years pass.
Some practical habits worth prioritising include:
- Prioritize regular movement: Walking, cycling, swimming, and strength training can help maintain cardiovascular health, muscle strength, and mobility. Choose activities that fit your current fitness level and gradually increase their duration or intensity.
- Eat nutrient-dense foods: Include vegetables, fruits, legumes, whole grains, healthy fats, and adequate protein in your meals. A varied diet can help provide the nutrients your body needs to maintain normal function.
- Protect your sleep: Aim for consistent sleeping and waking times while allowing enough time for rest. Good sleep supports physical recovery and several processes involved in metabolic and immune health.
- Avoid smoking: Smoking increases the risk of cardiovascular disease, cancer, and several other serious conditions. Avoiding tobacco is one of the most effective ways to protect your long-term health.
- Maintain regular health checks: Monitoring blood pressure, blood glucose, and cholesterol can help identify potential health risks before complications develop. Follow up on abnormal results with an appropriate healthcare professional.
These habits address several of the health problems that become more common with age. They also provide benefits that extend beyond weight management or physical appearance, supporting energy, mobility, and everyday independence.
You do not need to change everything overnight. Start with manageable adjustments and build a routine that you can maintain consistently.
The Future Of Anti-Ageing Medicine Is Still Being Tested
The possibility of slowing biological ageing through medication has moved beyond science fiction. Researchers are investigating existing drugs and new compounds that could influence the processes responsible for age-related decline, with the goal of helping people maintain better health for longer.
Rilmenidine, metformin, and senolytic treatments offer different approaches to the same scientific question. However, their potential benefits in humans remain unproven, and none should currently be treated as an established anti-ageing solution.
The most valuable future breakthrough may be a treatment that helps people reach older ages while maintaining their strength, independence, and ability to enjoy everyday life. Until researchers establish which medications can safely deliver those benefits, the strongest practical investment remains the health habits people build throughout their lives.
