Health consequences of air pollution on populations


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Overall Health Effects

Even healthy people can experience health impacts from polluted air including respiratory irritation or breathing difficulties during exercise or outdoor activities.Your actual risk of adverse effects depends on your current health status, the pollutant type và concentration, & the length of your exposure lớn the polluted air.

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High air pollution levels can cause immediate health problems including: Aggravated cardiovascular và respiratory illnessAdded áp lực to heart và lungs, which must work harder to lớn supply the toàn thân with oxygenDamaged cells in the respiratory system
Long-term exposure to polluted air can have permanent health effects such as:Accelerated aging of the lungsLoss of lung capacity và decreased lung functionDevelopment of diseases such as asthma, bronchitis, emphysema, & possibly cancerShortened life span
Those most susceptible khổng lồ severe health problems from air pollution are:Individuals with heart disease, coronary artery disease or congestive heart failureIndividuals with lung diseases such as asthma, emphysema or chronic obstructive pulmonary disease (COPD)Pregnant womenOutdoor workersOlder adults và the elderlyChildren under age 14Athletes who exercise vigorously outdoors
People in these groups may experience health impacts at lower air pollution exposure levels, or their health effects may be of greater intensity.
Ground-level Ozone

Ground-level ozone is formed when volatile organic compounds (VOCs) and oxides of nitrogen (NOx) react with the sun"s ultraviolet rays. The primary source of VOCs và NOx is mobile sources, including cars, trucks, buses, construction equipment và agricultural equipment.

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Ground-level ozone reaches its highest màn chơi during the afternoon & early evening hours. High levels occur most often during the summer months. It is a strong irritant that can cause constriction of the airways, forcing the respiratory system to lớn work harder in order khổng lồ provide oxygen.

It can also cause other health problems including:

Aggravated respiratory disease such as emphysema, bronchitis và asthmaLung damage, even after symptoms such as coughing or a sore throat disappearWheezing, chest pain, dry throat, headache or nauseaReduced resistance to infectionsIncreased fatigueWeakened athletic performanceParticulate Matter (PM) & Wildfire Smoke

Particulate Matter is a complex mixture that may contain soot, smoke, metals, nitrates, sulfates, dust, water & tire rubber. It can be directly emitted, as in smoke from a fire, or it can form in the atmosphere from reactions of gases such as nitrogen oxides.

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The form size of particles is directly linked to their potential for causing health problems. Small particles (known as PM2.5 or fine particulate matter) pose the greatest problems because they bypass the body’s natural defenses and can get deep into your lungs và potentially your bloodstream. Exposure to such particles can affect both your lungs và your heart.

Long-term exposure to lớn particulate pollution can result in significant health problems including:

Increased respiratory symptoms, such as irritation of the airways, coughing or difficulty breathingDecreased lung functionAggravated asthmaDevelopment of chronic respiratory disease in childrenDevelopment of chronic bronchitis or chronic obstructive lung diseaseIrregular heartbeatNonfatal heart attacksPremature death in people with heart or lung disease, including death from lung cancerShort-term exposure lớn particulate pollution can:

Aggravate lung disease causing asthma attacks & acute bronchitisIncrease susceptibility lớn respiratory infectionsCause heart attacks và arrhythmias in people with heart disease

Even if you are healthy, you may experience temporary symptoms, such as:Irritation of the eyes, nose & throatCoughingChest tightnessShortness of breathBackto Top