Noise pollution and its impact on our health

When you think about health, you probably first think of diet, exercise, or stress. However, noise pollution is a factor that strongly affects the heart, brain, sleep, and mood. In cities, thousands of people live for years with constant noise from traffic, industry, or neighbors. They more often develop high blood pressure, heart problems, insomnia, and mental health difficulties. What is actually happening in the body when you live in a noisy environment such as, for example, Belgrade? You may not be able to silence the whole city, but you can protect yourself with preventive measures and timely visits to an ENT clinic in Belgrade.

What is noise pollution and when it becomes risky

The term noise pollution refers to a level of noise that disrupts:

• your sleep
• concentration
• work
• the body’s recovery

Not every sound is dangerous. Harmful is the one that is too loud or lasts too long. Intensity is measured in decibels (dB). A conversation in a quiet room is around 50–60 dB. A busy street, main road, or traffic jam easily exceed 70 dB and more. Above certain average levels during the day and night, studies link noise to an increased risk of:

• hypertension
• heart attacks
• stroke

Public health guidelines therefore suggest that average traffic noise during the day should be limited, and that it should be even lower at night so sleep remains uninterrupted. If you have to raise your voice at home when talking, often wake up because of sounds from outside, or notice symptoms that may indicate hearing loss, the environment is already burdensome for your body.

Noise pollution in everyday environments

Where do you actually encounter noise pollution? Most often, it is traffic:

• cars
• buses
• trucks
• trains
• airplanes

Many buildings stand right next to busy streets, so residents hear noise almost all day. In the apartment, the following sounds add to this:

• elevator
• plumbing installations
• air conditioners
• televisions
• loud music
• household appliances

At work, open-plan offices with constant conversations, phones, and printers are a problem. In workshops and factories, machines are present that create powerful sound shocks. Schools and kindergartens are often very loud, and children spend a large part of the day there. You may think you have “got used” to these sounds, but your body still reacts. The nervous system never truly relaxes; it constantly waits for the next strong stimulus.

How noise pollution affects the body, heart, and brain

Noise does not affect only the ears. Every sudden or long-lasting loud sound activates the stress system. In the brain, centers switch on that usually work when you are in danger. Then the sympathetic nervous system starts, along with the hormonal axis that links the hypothalamus, pituitary gland, and adrenal glands.

Levels of adrenaline and cortisol in the blood rise. Blood vessels narrow, heart rate and blood pressure go up, and the inner layer of the vessels becomes more sensitive to damage. If this kind of stimulation lasts for years, the risk of developing hypertension, coronary heart disease, or stroke increases. At night, noise interrupts deep sleep, even when you do not remember waking up. The brain wakes from deeper stages of sleep and returns to lighter ones.

After such nights, you are more likely to have:

• metabolic problems
• weight gain
• weaker blood sugar regulation
• poorer concentration

On top of that, the brain constantly filters sounds from the environment, so it has less “space” for attention, learning, and memory.

Hearing, tinnitus, and vulnerable groups

In the inner ear there are tiny hair cells that turn sound waves into electrical signals. Strong and long-lasting noise can permanently damage them, because they do not regenerate. This leads to sensorineural hearing loss. You may notice that it is harder to follow conversation in crowds, you keep turning up the TV, or you do not hear voices well from a greater distance.

Tinnitus, ringing or buzzing in the ears, is often a related problem. It appears when the altered auditory system sends “amplified” internal signals, so the brain experiences a sound that does not exist outside. For many people, professional tinnitus treatment becomes necessary when it disrupts sleep and increases anxiety.

• Children are especially sensitive, because their hearing system and nervous system are still maturing. Noise pollution at school and at home can slow progress in reading, learning, and the ability to maintain attention.
• Pregnant women are sensitive because of the additional strain on the circulation and hormonal changes.
• Older adults and people with existing heart, brain, or metabolic diseases have fewer reserves, so even smaller deviations in noise level more easily worsen their condition.

How to recognize the problem and measure noise levels?

How can you know whether noise pollution is already burdening you? The first sign is often not the ears but fatigue. You may notice that a day in a noisy environment drains you much more than a quiet day, even though you did similar things. Headaches become more frequent, it is harder to concentrate, and sleep does not refresh you properly. In the morning, you wake up exhausted, irritable, with a feeling of “fog” in your head.

If, in addition, you feel ringing in the ears, spikes in blood pressure, rapid heartbeat, or excessive sweating (hyperhidrosis) in noisy situations, there is probably an effect of noise. It is useful to keep a short record for a few days:

• when the noise is strongest
• how you sleep at those times
• how you feel at those times

You can also use a noise-measuring app on your phone or a simple home meter. They do not give perfect values, but they can show whether you are often above recommended levels.

Practical steps for less noise at home and better sleep

You cannot always remove noise pollution, but you can soften the path through which sound reaches you. In the apartment, thicker curtains, rugs, and upholstered pieces of furniture help, because they absorb part of the sound energy. Sealing gaps around windows and doors reduces the penetration of noise from the hallway and the street.

If you are planning renovation, it is worth considering windows with better sound insulation, especially in the bedroom. Wardrobes and shelves on shared walls can further muffle sound from the neighboring apartment. The bedroom should be as quiet as possible: without unnecessary devices with fans, without screens that are constantly on. A regular bedtime schedule, softer lights in the evening, and avoiding caffeine and alcohol late at night also help make sleep deeper.

Protecting hearing and sleep when you cannot quiet your surroundings

What if you cannot quiet the neighbors or traffic? In that case, the focus shifts to protecting you as the receiver of noise.

• For short-term exposure to loud events, such as concerts or working with tools, earplugs or over-ear headphones are useful. It is important to position them correctly and follow the recommended duration of use.
• In public transport or open-plan offices, headphones with noise cancellation can help. Thanks to them, you can listen to music or content on your phone at a lower volume, because the device reduces background noise.
• For sleep, some people like a white noise machine, which produces a steady, gentle sound. It masks sudden outside noises and reduces the number of micro-awakenings.
• It is also helpful to take small “acoustic breaks” during the day. You might be able to walk along a quieter street, go to a park, or spend part of your break in a calmer room. These short breaks help the nervous system settle.

Rights, regulations, and professional support

Noise is not only a private problem; it is also a public health issue. There are guidelines that propose limits for average noise levels for roads, railways, and air traffic, because cardiovascular and metabolic diseases, as well as sleep disorders, occur more often in these zones. Local communities therefore introduce speed limits, sound barriers, bans on certain types of work at night, and other measures. As a tenant, you first address the person or company creating the noise, through a calm conversation and a clear description of the problem. If that does not help, the next step may be municipal services and other competent bodies that act according to local regulations.

When you notice that noise pollution is affecting your health, it is wise to involve doctors. An ENT specialist can check your hearing, assess tinnitus, and suggest a further plan. At Dr Prlja Medical in Belgrade, you can undergo a detailed hearing examination and receive a professional assessment. A cardiologist monitors blood pressure, heart rhythm, and other risk factors. A psychologist or psychiatrist can help if you have anxiety, depressive symptoms, or serious sleep problems related to noise.

Personal plan for reducing noise pollution

To truly change the situation, you need a clear plan, not just good intentions. If you already have hypertension, heart problems, tinnitus, or pronounced psychological difficulties, be sure to include your doctor in the plan. You do not have to accept a noisy environment as something inevitable. Noise pollution affects your health, but you can take concrete steps to reduce its impact and make your daily life calmer and healthier.