As extreme temperatures rise globally, a silent danger is building—and it could be accelerating how rapidly we get older. Beyond the evident destruction of heat exhaustion, dehydration, and stress brought on by the climate, science is beginning to discover deeper, less evident harm: heat waves could be speeding up cellular aging.

With historic highs in global temperatures and rising frequency of heatwaves, particularly in the U.S. and Asia, scientists are calling for consideration at the nexus of environmental heat and epigenetic ageing.

What is Epigenetic Age?

Chronological age is the age on your driver's license, but epigenetic age is the age written far down in your cells. This scientific term tracks how old your body is biologically, based on chemical alterations in your DNA. These alterations, referred to as DNA methylation, function like switches that flip genes on and off. As we get older, these patterns change—and scientists use them to approximate biological age with instruments referred to as "epigenetic clocks."

Your epigenetic age doesn’t always match your chronological one. Influences like pollution, stress, poor lifestyle habits, and now—heat exposure—can accelerate epigenetic aging. This internal ticking clock impacts everything from how quickly your skin ages to your ability to fight disease, recover from illness, or manage inflammation.

Is Your DNA A New Risk Factor?

In 2023, a new German study published in Environment International found a strong association between heat exposure and epigenetic age acceleration. Scientists discovered that in areas where average annual temperatures were only 1°C higher, individuals exhibited evidence of accelerated biological aging.

Wenli Ni, a Harvard T.H. Chan School of Public Health postdoctoral research fellow and first author of the study, explained that heat stress affects DNA methylation patterns. These alterations can compromise gene function, accelerate aging, and cause a cascade of biological damage—particularly if the exposure is chronic.

Additionally, Taiwan studies that had more than 2,000 participants upheld the association. The increase in biological age was attributed to a rise of 1°C from the average of 180 days by 0.04 to 0.08 years. At first, it might appear negligible in the short term, but when consistent throughout years and population, it aids in premature occurrence of diseases that are related to age and makes healthcare burdens worse on a worldwide scale.

Why The Heat in 2024 Was a Tipping Point?

2024 was the hottest year ever, with almost 6.8 billion individuals facing record-breaking heat for a minimum of a month. Health professionals in areas such as India observed an influx of patients who looked physically older than their age, which sent alarm signals regarding the influence of climate on the health and lifespan of human beings.

One such U.S.-based study, published in Science Advances, looked at more than 3,500 adults older than age 56 and discovered a robust association between prolonged heat exposure (1–6 years) and cellular aging. Chronic heat not only disturbed sleep and increased levels of stress, but also played a role in biological deterioration that grew more severe with time.

The German study also emphasized that women, and especially those with Type 2 diabetes or obesity, showed stronger links between heat and increased aging. Women produce less sweat and their bodies generally take longer to trigger cooling, placing them at a physiological disadvantage during heatwaves.

Diabetics and the obese also have difficulty with heat dissipation because of decreased blood flow and insulating body fat, which complicates the release of heat from the core to the skin. These conditions further enhance the biological effect of heat, raising the risk of cardiovascular issues, kidney injury, and premature chronic diseases.

Epigenetic Impact Before Birth

Unsettlingly, even the effect of heat and climatic stress may start pre-natally. A recent research study, conducted on Kenya-based drought-stricken mothers who published their paper in Nature, suggested that intra-uterine exposure to harsh external environmental conditions contributed to hastened aging of their children.

Stress during pregnancy, water deprivation, caloric deficit, and psychogenic stress induced epigenetic changes in fetuses under development—showing that ageing might be modifiable by external surroundings even before one's life is started. All this indicates towards a dire requirement of addressing determinants of well-being, including access to nutrition, water, and gender balance, especially among climate-risk districts.

Ways to Protect Against Heat-Related Ageing

While reversing climate change will take systemic global action, individuals can take key steps to protect themselves from heat-induced aging:

1. Stay Hydrated

Dehydration is one of the most immediate risks of extreme heat. Drink water frequently—don’t wait until you’re thirsty. Carry water when heading outdoors and avoid alcohol and caffeine in hot weather.

2. Keep Cool

Use air conditioning when possible. If it’s not available, electric fans can offer relief when the indoor temperature is below 104°F (40°C). Keep your skin damp with a wet towel, mist bottle, or sponge baths. Visit air-conditioned public spaces like malls or libraries.

3. Dress Smart

Wear light-colored, breathable clothing. Avoid tight fabrics. Use wide-brimmed hats and sunscreen to protect your skin from direct sun exposure.

4. Plan Smartly

Avoid hard work between 11 a.m. and 4 p.m., the usual peak heat period. Schedule chores in the morning or evening when it's cooler.

5. Check In With At-Risk People

The most susceptible are older people, young children, pregnant women, and those with serious illness. Make sure they avoid heat and drink plenty of water when a heatwave hits.

The connection between climate and aging is no longer conjecture—it's quantifiable and based on several worldwide studies. As heat waves and frigid days become the norm, public health infrastructure needs to change by not only addressing heat as a weather phenomenon, but as a constant health threat.

Long-term solutions will require more than individual behavior. Governments and health institutions will have to prioritize heat preparedness plans, enhance urban infrastructure, and establish cooling centers. Policies specifically targeting enhancement of food security, safeguarding pregnant women, and mitigating occupational exposure to heat—particularly among women in labor-intensive occupations will be crucial.

In conclusion, if we don't take action to stem the increasing menace of heat extremes, we are likely to wind the clock forward—not only on climate, but on the human life expectancy as well. To age more quickly as a result of exposure to the environment is a brewing public health emergency and the world needs to wake up to it.

Many people do not realise just how closely mental health and liver health are connected—especially when alcohol becomes a go-to coping strategy for stress, anxiety, or emotional overwhelm. What may seem like temporary relief can quietly evolve into a pattern that affects both the mind and the body in significant ways. Dhara Ghuntla, Psychologist affiliated with Sujay Hospital, 7 Hills Hospital, Criticare Hospital, in an interaction with Health and Me, spoke about the impact of stress, alcohol use and emotional eating on the liver.

In today’s fast-paced, high-pressure lifestyle, it is common for individuals to turn to alcohol to unwind or escape difficult emotions. In the short term, alcohol can create a sense of relaxation or numbness. However, over time, this reliance can shift into a habitual coping mechanism and eventually into dependence. While the psychological impact is often discussed, the physical consequences—particularly on the liver—are just as important.

The liver plays a critical role in detoxifying the body. Regular alcohol consumption places it under constant strain, impairing its ability to function effectively. Over time, this can lead to conditions such as fatty liver, inflammation, and even long-term liver damage. What makes this especially concerning is that early-stage liver issues often present with little to no obvious symptoms, allowing damage to progress unnoticed.

At the same time, liver health has a direct influence on mental well-being. When the liver is compromised, it can affect energy levels, mood regulation, and cognitive function. People may experience increased fatigue, irritability, anxiety, low mood, or emotional instability. This happens because the liver plays an indirect but essential role in brain health through metabolism and toxin clearance.

The Vicious Cycle

This creates a self-perpetuating loop. A person feeling stressed, low, or anxious may turn to alcohol for relief. While it may help temporarily, it simultaneously places stress on the liver. As liver function declines, mental health symptoms—such as fatigue, irritability, anxiety, or low mood—can worsen. This often leads the individual to consume more alcohol, reinforcing the cycle.

Adding another layer, many individuals who rely on alcohol are often dealing with underlying issues such as depression, anxiety, sleep disturbances, or chronic life stressors. Alcohol is frequently used as a form of self-medication. However, instead of addressing these root concerns, it masks them temporarily while deepening both psychological and physical harm. Over time, this pattern increases dependency and makes recovery more complex.

The Gut–Liver–Brain Connection

Liver health is also closely tied to gut function and brain health. When the liver is under stress, digestion can be affected, nutrient absorption may decline, and energy levels can drop. This interconnected system—the gut, liver, and brain—plays a key role in emotional regulation and overall well-being. Disruptions in one area can ripple across the others, influencing how a person thinks, feels, and functions daily.

Breaking the Pattern

Recognising this connection is the first step towards change. Instead of turning to alcohol, healthier coping strategies can help regulate stress and support both mental and physical health. Practices such as yoga, meditation, regular exercise, journalling, and maintaining a balanced diet can significantly improve resilience and emotional stability.

Prioritising mental well-being, addressing underlying psychological concerns, and protecting liver health are not separate goals—they are deeply interconnected. Seeking timely support, whether through therapy, lifestyle changes, or medical guidance, can help break the cycle.

Reducing or eliminating alcohol use is not just about avoiding physical harm; it is about creating space to heal the underlying causes of stress and emotional distress. Supporting the liver, nurturing the gut, and caring for mental health together can lead to more sustainable and meaningful well-being.

You pick up a jar on the kitchen shelf and shudder. You take a flight of stairs, and that old pain sinks into your hip. You get up in the morning, and your shoulder feels as though it has been wrung out. You attribute it to age, to a long day on your feet, to just how things are now. But what if your body is trying to tell you something very particular and you have been missing it?

Dr Apoorv Dua, Consultant, Orthopaedics, ISIC Multispeciality Hospital, in an interview with Health and Me, said that this may be a sign of bursitis—a condition that is much more widespread than most people realise, and much more treatable than most people are aware. The expert went on to answer common questions regarding extreme pain that comes with this condition.

What is bursitis?

Bursae are small, fluid-filled sacs located between your bones, muscles, and tendons. Imagine them as the natural cushioning system of the body—shock absorbers that ensure your joints move smoothly and painlessly. Under normal circumstances, you do not even think about them. However, when inflamed, due to repetitive motion, prolonged pressure, injury, or infection, they make their presence known in a very noticeable manner. This is bursitis. Although it most often appears in the shoulder, elbow, hip, and knee, it may occur in nearly any joint in the body.

Who gets bursitis—and why?

This is where the lifestyle connection cannot be overlooked. Bursitis does not discriminate, but it has definite patterns. The weekend warrior who runs ten kilometres on Saturday after sitting at a desk all week. The housewife who spends hours cleaning floors or squatting in the kitchen. The office worker who has been stooped over a computer. The gym enthusiast who does not warm up. The retired teacher who begins a walking routine too vigorously. All these individuals may be silently placing stress on their bursae, and in many cases, bursitis is the eventual outcome.

Age also plays a role—the bursae, like most of our connective tissue, grow weaker with age. Certain medical conditions such as rheumatoid arthritis, gout, and diabetes can increase the risk. However, in many instances, the cause is simply the way we move—or do not move—in our day-to-day lives.

What does bursitis feel like?

A key characteristic of bursitis is pain that is disproportionate to the activity causing it. Reaching overhead, sitting on a hard surface, pressing on your elbow, or walking downhill—these are not dramatic movements, yet with bursitis, they may trigger a sharp, deep, or burning pain that interrupts you mid-action. The affected joint is usually swollen and tender. The area may feel warm to the touch. Movement becomes guarded. Sleep, particularly in cases of shoulder bursitis, can be difficult, as lying on the affected side aggravates the pain.

The challenge with bursitis is that its symptoms can resemble other conditions—tendinitis, arthritis, a muscle strain, or even a ligament tear. Many individuals self-diagnose, self-treat with painkillers, and hope it will go away. Sometimes it does. However, chronic, untreated bursitis may persist for months and, in some cases, lead to complications.

Bursitis diagnosis

A thorough clinical examination is usually the first step. A skilled orthopaedic specialist can identify the affected bursa through specific physical assessments. Imaging, such as ultrasound or MRI, may be recommended depending on the case to confirm the diagnosis, rule out structural damage, or guide treatment.

If infection is suspected—indicated by increased redness, fever, and rapidly worsening pain—fluid may be aspirated from the bursa and tested. Septic bursitis is a serious condition that requires immediate medical attention and is treated differently from the more common non-infectious type.

Bursitis treatment

The encouraging fact about bursitis is that it responds well to treatment, particularly when detected early. Most cases are managed with a combination of rest, activity modification, ice application, and anti-inflammatory medication. Physiotherapy also plays an important role, helping to correct movement patterns, strengthen supporting muscles, and restore the full range of motion.

In more persistent cases, a corticosteroid injection into the bursa may provide rapid and significant relief by reducing inflammation at its source. Surgery is rare and is typically considered only in chronic, recurrent cases that do not respond to conservative treatment.

Prevention is better

In many instances, bursitis is linked to lifestyle—and that presents an opportunity for prevention. Even small changes can help: warming up before exercise, avoiding excessive strain on joints, maintaining a healthy weight to reduce pressure on hips and knees, and ensuring workstations are ergonomically designed.

Pain often becomes background noise—something we get used to, work around, and push through. However, bursitis reminds us that the body communicates with precision. That pain when you pick up a jar, that discomfort on the stairs—it is not simply ageing. It is a signal worth discussing with your doctor.

The bulge that appears when an internal organ pushes through a weakened muscle wall will not recede with rest or medication—it will, in most cases, grow larger and more uncomfortable over time. Surgery is the only definitive treatment. What has changed significantly in recent years is what that surgery looks like and what recovery from it requires.

Dr Rajesh Sharma, Director – General Surgery, Minimal Access & Bariatric Surgery, CK Birla Hospitals, Jaipur, in an interview with Health and Me, spoke about the introduction of robotics in hernia treatment and how it can benefit patients.

How hernia surgeries are becoming less painful

With advances in surgical technology, minimally invasive approaches have significantly improved patient outcomes. One of the most important developments in recent years is robotic-assisted hernia surgery using the da Vinci Surgical System. In robotic surgery, the surgeon operates from a console equipped with a high-definition, three-dimensional, magnified view of the surgical field. The robotic system translates the surgeon’s hand movements into extremely precise movements of miniaturised instruments inserted through small incisions. The system also filters natural hand tremors and provides a greater range of motion than the human wrist, enabling meticulous dissection and suturing.

For hernia repair, these capabilities allow surgeons to perform delicate steps such as accurate defect closure and optimal mesh placement, which are important for the long-term durability of the repair.

Benefits for patients

Robotic hernia repair offers several advantages for patients:

1. Smaller incisions and minimal scarring
2. Reduced postoperative pain
3. Lower risk of wound complications
4. Shorter hospital stay
5. Faster return to normal activities

Because the procedure is minimally invasive, most patients experience earlier mobilisation and quicker overall recovery compared with traditional open surgery. Robotic surgery is particularly useful in complex, recurrent, or large ventral hernias, where precise reconstruction of the abdominal wall is important. While not every hernia requires a robotic approach, the technology expands the surgeon’s ability to perform advanced minimally invasive repairs with improved ergonomics and visualisation.

The future of hernia surgery

The integration of robotic platforms such as the da Vinci system represents a major step forward in modern general surgery. By combining surgical precision with minimally invasive techniques, robotic hernia repair aims to enhance patient comfort, improve recovery, and deliver durable surgical outcomes.