African dust affecting Greece is a relatively frequent phenomenon, especially when meteorological conditions favor the transport of dust particles from the Sahara Desert. The frequency and intensity of these dust events in Greece vary annually, with an average of 13 occurrences per year (ranging from 7 to 20), depending on atmospheric conditions and the amount of dust carried from the Sahara.

In general, it is not uncommon for African dust to reach Greece, impacting air quality and, consequently, public health. African dust contains particles of various sizes, such as PM10, PM2.5, and even smaller ones, which can also carry atmospheric pollutants.

The increase in airborne particles can worsen respiratory diseases like asthma, bronchitis, and allergies. Individuals with pre-existing respiratory conditions are particularly at risk, as shown by the rise in hospital visits during dust events. Residents of urban areas with already poor air quality should take extra precautions.

Effects on the Respiratory System

One of the primary health impacts of African dust is its effect on respiratory health. Fine dust particles can penetrate deep into the lungs and even enter the bloodstream. For individuals with conditions such as asthma, bronchitis, or chronic obstructive pulmonary disease (COPD), exposure to these particles can exacerbate symptoms, leading to shortness of breath, coughing, wheezing, and chest discomfort.

Allergies and Irritation

African dust can trigger allergic reactions in some people, causing respiratory irritation, nasal congestion, sneezing, and watery eyes. Those with allergies or sensitivities to environmental factors may experience intensified symptoms during high dust periods.

Cardiovascular Effects

Beyond respiratory issues, exposure to African dust has been linked to cardiovascular problems. The particles can contribute to inflammation, oxidative stress, and vasoconstriction, increasing the risk of heart attacks, strokes, and other cardiovascular conditions, particularly in vulnerable populations.

Impact on the Immune System

Prolonged exposure to African dust can also weaken the immune system, making individuals more susceptible to respiratory infections and other illnesses. The inflammatory response triggered by dust particles can compromise the body’s defenses, making it harder to fight off pathogens.

Long-Term Health Risks

Chronic exposure to African dust and its associated pollutants has been linked to long-term health risks, including respiratory diseases, reduced lung function, cardiovascular disorders, and even certain types of cancer. Continuous exposure to high levels of dust particles can have cumulative health effects over time. According to a 2020 review on the impact of dust on air quality in Europe, an estimated 42,000 deaths per year are attributed to dust exposure, with Mediterranean countries reporting that 27-44% of PM10-related deaths are due to African dust.

Precautionary Measures

To minimize health risks during high African dust levels, consider the following precautions:

• Stay informed: Monitor air quality reports and weather forecasts to know when African dust levels are expected to be high.
• Limit outdoor activities: Avoid spending extended periods outdoors, especially on windy days when dust particles are more likely to be suspended in the air.
• Keep windows and doors closed: Although homes and workplaces generally require ventilation, during dust outbreaks, ventilate briefly in the morning and then keep windows and doors shut to prevent dust infiltration. Use air purifiers or filters if available.
• Wear masks: When going outside in dusty conditions, consider wearing a mask to reduce dust inhalation.
• Stay hydrated: Drink plenty of water to help your body cope with dust exposure.

Individuals with pre-existing respiratory conditions should take extra precautions. Asthma patients may need to adjust their medication dosage or frequency according to their doctor’s management plan to control symptoms. COPD patients may need to increase their use of inhalers for symptom relief.

Additionally, during this season, extra caution is advised for asthma sufferers due to spring allergies.