The world that we live in is filled with sounds, some are comforting and some could be jarring too. But what if the constant noise surrounding us is doing us more harm than we realize? There has been immense research that shows that noise is not just a nuisance, but a silent killer and affects our health in ways we do not even know. There are associations of sound causing heart attacks, type 2 diabetes, and dementia.

How Does Your Body Respond To Noise?

Noise is seen as an annoyance, but it effects can go beyond what we imagine. When we hear a sound, it travels through the ear to the brain. This is where it gets processed by the amygdala. It is a region that is responsible for emotional responses. This also triggers a stress response- our heart rate increases, our blood pressure rises, and stress hormones like cortisol flood our system.

This response is also designed to help us react to immediate threats. Especially, if we hear the sound of a predator approaching. However, when we are exposed to constant noise, this response is triggered repeatedly and could compel us to live in a long-term anxious state.

Hidden Health Risks

Many studies including Harvard Health and theAmerican College of Cardiology have found associations of noise with health problems including putting a person at a higher risk of cardiovascular diseases such as heart strokes, attacks, and high blood pressure. The constant activation of the stress response can take a toll on the body, increasing inflammation and making it harder for the heart and circulatory system to function properly. Over time, this can lead to serious health conditions like heart disease and diabetes.

Even more troubling, research suggests that noise pollution may contribute to mental health issues. Studies have found a strong connection between exposure to noise and disturbed sleep, which in turn can cause anxiety, depression, and cognitive decline. The World Health Organization estimates that noise contributes to around 12,000 premature deaths annually across Europe alone. This invisible threat, however, is often overlooked because the effects are gradual and cumulative.

Noise and Sleep: A Silent Disturbance

One of the most insidious aspects of noise pollution is its impact on sleep. Even when we are asleep, our bodies are not fully immune to the effects of sound. Our ears never fully “turn off,” meaning that even faint noises can disrupt our sleep cycle. Research has shown that people who live in noisy environments—whether near busy roads, airports, or urban centers—often experience fragmented sleep, leading to fatigue and a weakened immune system. Over time, this chronic lack of restful sleep can lead to significant health problems, including an increased risk of developing cognitive disorders such as dementia.

The Urbanization Problem

As cities continue to grow, noise pollution is becoming more widespread. Traffic noise, in particular, is one of the most common and harmful sources. The rise of urbanization means more cars, buses, and trains, all of which contribute to an ever-increasing din. This urban soundscape is often relentless, with little respite for those living within it. In densely populated cities, people are exposed to high decibel levels, which can exceed safe thresholds for heart health. In many cases, the sheer volume of sound is not just unpleasant; it’s dangerous.

What Can We Do About It?

The solution is not as simple as reducing noise in our immediate surroundings, though efforts to reduce traffic noise and limit industrial sounds are essential. Some cities have taken steps to create quieter spaces by converting busy roads into pedestrian zones or installing noise barriers. These measures have shown to have a positive impact on public health, with research suggesting that even small reductions in noise can prevent premature deaths and improve overall well-being.

While vaccinations against human papillomavirus (HPV) are key to preventing cervical cancers in women, a new study has shown that the shots can also lead to a significant risk of head and neck cancers in men and boys.

The study, published in JAMA Oncology, showed that men and boys who received the HPV vaccine from ages nine to 26 were nearly 50 per cent less likely to develop cancers of the head and neck, esophagus, anus, or penis.

The results show the importance of vaccinating all children and teens against HPV, said Taito Kitano, DrPH, first author of the study and a researcher at Nara Prefecture General Medical Center in Nara, Japan, CIDRAP News reported.

“Children, adolescents, parents, and health care workers should be more informed about the expected benefits of the HPV vaccine, not just cervical cancer,” Kitano added.

The study included more than 510,000 boys and men vaccinated between January 2016 and December 2024, along with an equal number of unvaccinated males.

Vaccinated participants in the study were given shots that prevent infection with nine strains of HPV.

What Are HPV-related Cancers in Men

HPV-related head and neck cancers often develop in the back of the mouth and throat. They are asymptomatic in the early stages and are typically found only after they cause pain or swelling.

However, by the time these symptoms begin to appear, the cancers are often larger and more advanced, making them harder to cure.

Earlier this year, the European Cancer Organization noted in a LinkedIn post urged for HPV vaccine for all people, regardless of gender.

"HPV affects everyone, regardless of gender. It can lead to cancers of the cervix, mouth and throat, anus, and penis. This is why universal protection is so important," it said.

According to Dr David Pfister, an oncologist at Memorial Sloan Kettering Cancer Centre, New York, the HPV vaccine protects men from penile, neck, and head cancer. He also noted that while a pap test detects early-stage cervical cancer in women, no such test exists for penile, anal, or head and neck cancers in men, which can worsen their survival rate.

"Developing something like a pap test for throat cancer would be a game-changer. When you compare the throat to the cervix, the anatomy of sites like the tonsils and the base of the tongue has hard-to-reach crevices in which the virus can hide," Dr Pfister explained.

"Until an effective and reliable screening test is developed, patients should stay up to date on their HPV vaccines, know how the disease is acquired, and take any suspicious symptoms like a lump in the neck or blood in the phlegm to their doctor or dentist," he added.

The findings have important implications for vaccination policies. HPV vaccination programs have focused primarily on women because of the link between HPV and cervical cancers. The study provides evidence that HPV vaccination should be accessible irrespective of sex.

Growing fatty liver disease in India is significantly affecting both male and female fertility, said doctors ahead of World Liver Day.

World Liver Day is observed annually on April 19 to raise global awareness about liver-related diseases, the importance of early detection, and preventive measures. The liver is the second largest organ in the body and a vital "silent worker," often showing no signs of damage until late stages.

With nearly one in three adults is affected by fatty liver, the silent disease is now emerging as an important but often ignored cause behind infertility in India.

Poor liver health is causing health issues, such as irregular periods in women and falling sperm counts in men, affecting their reproductive health.

Rising Liver Disease Cases

A recent study published in The Lancet Gastroenterology & Hepatology journal showed that the Metabolically Dysfunctional-Associated Steatotic Liver Disease (MASLD), formerly known as non-alcoholic fatty liver disease (NAFLD), affected 1.3 billion people around the globe in 2023.

India has also shown a sharp rise in MASLD prevalence, up 23.19 per cent from 1990 to 2023. India’s age-standardized MASLD prevalence rate rose from 10,191 per 100,000 in 1990 to 12,555 per 100,000 in 2023.

The findings show that the spike is increasingly driven by rising metabolic risk factors, including high blood sugar and obesity.

The alarming study estimates the numbers to further spike by over 38 percent to reach 1.8 billion cases by 2050, causing substantial health and economic impacts worldwide.

“We are seeing a big increase in fatty liver cases, even in younger people in their late 20s and 30s. Earlier, it was mostly seen in older patients, but now, due to poor lifestyle and diet habits, it is becoming very common in the young population also in India,” said Dr. Saurabh Singhal, Senior Consultant & Director, Centre for Liver-GI Diseases and Transplantation (CLDT) at Aakash Healthcare.

Also read: NAFLD to MASLD: Experts Explain Why This Common Yet Dangerous Liver Condition Got Renamed

"Almost every second patient we see has some degree of fatty liver. Many people do not even know they have it because it shows very few symptoms in the early stage. That is why it is called a silent disease,” added Dr Amit Miglani, Director & HOD, Gastroenterology, Asian Hospital, Faridabad.

Impact On Women’s Fertility

In India, around 8 per cent of women face infertility, and doctors are now seeing a strong link between fatty liver and difficulty in conceiving. The problem is more common in women with PCOS.

Dr. Hrishikesh Pai, Consultant Gynecologist & IVF Specialist, Lilavati Hospital, Mumbai, explains, “In women, fatty liver is closely linked with hormonal imbalance. We are seeing more patients with Polycystic Ovary Syndrome and irregular periods, where fatty liver is also present. This affects ovulation and makes it difficult to conceive.”

The doctors noted fatty liver affects how the body handles insulin and hormones, which are very important for regular periods and pregnancy.

Impact On Male Fertility

Infertility is no longer only a woman’s issue. In India, 30-40 per cent of infertility cases are linked to men, and doctors say cases are rising.

As per the experts, liver problems directly affect hormones like testosterone in men.

In addition to obesity, fatty liver is leading to low sperm count and poor sperm quality.

Studies show that sperm count in Indian men has dropped sharply over the last few decades, which is a growing concern. Doctors stated that "liver problems can also increase body stress, which further damages sperm health".

How To Prevent?

Fortunately, the progression of fatty liver disease can be stopped if people lose weight early in the course of the disease and adopt healthy eating habits and exercise regularly, said Dr. Vikas Jindal, Consultant, Dept of Gastroenterology at the CK Birla Hospital, Delhi

Further, the doctors stated that although liver disease is becoming a common problem, the worrying part is that people realize it very late.

They recommended:

• a liver health evaluation once a year, especially at-risk people like those with obesity, diabetes, altered liver parameters in blood test, fatty liver, hepatitis, or cirrhosis in family members.”

• Liver health and overall metabolic health must also be checked early in fertility treatment.

• Make simple lifestyle changes like healthy food, regular exercise, and weight control.

Cancer is often feared as a silent disease, but in many cases, the body does give early warning signs. The challenge is that these signals are either ignored, misunderstood, or detected too late.

A large number of cancer cases are diagnosed at advanced stages—not because symptoms were absent, but because they were overlooked or diagnosis was delayed.

Understanding the early signs and the reasons behind delayed detection can help save lives.

Speaking to HealthandMe, Dr Siddharth Sahai, Director & Unit Head - Medical Oncology, Max Super Speciality Hospital, Dwarka, shared seven signs of cancer that should not be neglected.

1. Unexplained weight loss

Losing weight without trying—especially more than 4–5 kilos in a short time—can be an early sign of cancers such as stomach, pancreas, or lung cancer.

2. Persistent fatigue

Feeling unusually tired despite adequate rest could signal underlying issues like blood cancers or colon cancer. This kind of fatigue does not improve with sleep.

3. Changes in bowel or bladder habits

Chronic constipation, diarrhea, blood in stool, or changes in urination patterns should not be ignored. These may point toward colorectal, bladder, or prostate cancer.

4. A lump or thickening in the body

Any new lump—especially in the breast, neck, or underarms—needs medical evaluation. Not all lumps are cancerous, but it’s important to rule it out early.

5. Persistent cough or hoarseness

A cough lasting more than 2–3 weeks, or voice changes, could be early signs of lung or throat cancer, especially in smokers.

6. Unusual bleeding or discharge

Bleeding between periods, after menopause, blood in urine, or unusual discharge can be warning signs of cancers such as cervical, uterine, or bladder cancer.

7. Non-healing sores or skin changes

Sores that do not heal, changes in moles, or new skin growths could indicate skin cancer or oral cancer (especially in tobacco users).

Also read: New Breast Cancer Guidelines Recommend Mammograms Every Two Years for Women

Why Cancer Diagnosis Often Gets Delayed

Dr Sahai also mentioned six common causes of delayed cancer diagnosis

Factors that contribute to late detection include:

1. Lack of awareness

Many people are not aware that these symptoms could be linked to cancer. They often dismiss them as minor issues like acidity, infection, or weakness.

2. Ignoring symptoms due to busy lifestyles

In both urban and rural settings, people tend to delay doctor visits due to work commitments, family responsibilities, or simply hoping the problem will resolve on its own.

3. Fear and denial

The fear of being diagnosed with cancer leads many individuals to avoid medical consultation. Denial becomes a major barrier, especially when symptoms are mild initially.

4. Limited access to healthcare in some areas

In smaller towns and rural regions, access to diagnostic facilities and specialists is still limited. This leads to delays in proper testing and referrals.

5. Financial constraints

Concerns about the cost of investigations and treatment often prevent timely medical attention. Many patients wait until symptoms worsen significantly.

6. Misdiagnosis or delayed referral

In some cases, early symptoms may mimic common illnesses. Without timely screening or specialist referral, diagnosis can be delayed.

The Importance Of Early Detection

Dr Sahai stressed that early detection significantly improves cancer outcomes. Most cancers, if identified in the initial stages, are treatable and even curable. The key lies in listening to your body and acting without delay.

Simple steps like regular health check-ups, cancer screening (such as mammography, Pap smear, or oral screening), and timely consultation can make a crucial difference.

Ignoring symptoms may seem convenient in the short term—but early action can save not just time, but life itself.