How pollution is ageing your skin faster

While many in Kathmandu are aware of the environmental challenges posed by pollution, its direct impact on personal health, particularly skin aging, is often overlooked. This article brings a crucial, yet often ignored, aspect of pollution's detrimental effects to the forefront, emphasizing that it's not just an environmental issue but a significant dermatological concern.

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Pollution accelerates the ageing of the skin on many fronts. It emits particles of harmful substances known as free radicals that destroy skin cells, damage DNA, and disrupt the skin’s natural protective layer, making it more difficult to retain moisture.

Dr. Pramod Agrawal, a seasoned dermatologist, meticulously breaks down the biological mechanisms through which airborne pollutants wage war on our skin. The concept of 'oxidative stress' is explained in accessible terms, illustrating how free radicals generated by pollution overwhelm the skin's natural defenses. This leads to a cascade of damage, from DNA disruption to collagen destruction, ultimately manifesting as visible signs of premature aging.

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The main mechanism of skin ageing resulting from pollution is oxidative stress. Free radicals are unstable molecules formed by air pollutants that damage skin cells by robbing them of electrons, which are vital to the skin, including DNA, proteins, and lipids.

The piece specifically calls out pollutants like PM2.5, commonly found in the smog that blankets cities like Kathmandu, and nitrogen dioxide from vehicle emissions. Their distinct ways of harming the skin—deep penetration for PM2.5 and pigment disruption for nitrogen dioxide—provide a clear understanding of the multifaceted threat. This localized context makes the information particularly relevant for residents of heavily polluted urban centers.

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Not every pollutant causes the same type of damage. PM2.5, the small particles present in smog and smoke, are considered the most harmful because they settle in the deepest layer of the skin, where they carry toxic chemicals and heavy metals.

Furthermore, the article addresses the impairment of the skin barrier and moisture loss, a common complaint among city dwellers experiencing dry, irritated skin. It highlights how pollution doesn't just cause external damage but fundamentally alters the skin's structure, creating a cycle of vulnerability. This detailed explanation serves as a wake-up call, urging individuals to consider air quality not just for respiratory health but for maintaining youthful and healthy skin.

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The fats and proteins that bind the outer layer of skin to the underlying skin are broken down by pollution, creating small holes through which water can escape. The result is skin that is constantly dry, tight and easily red with irritation.