How Anak Krakatau Ash Puts 3.3 Million Older Indonesians at Risk

About 3.3 million older Indonesians could face health risks from volcanic ash after Mount Anak Krakatau erupted, according to the Health Ministry. The ash has spread toward Lampung, Banten, Jakarta and parts of West Java.

Imran Pambudi, the ministry's director of health services for vulnerable groups, warned that volcanic ash differs from ordinary dust. Its sharp silica particles can damage the lungs, eyes and skin. When mixed with water, the ash can harden like cement, meaning improper cleaning may increase the danger.

For older people, exposure can trigger acute respiratory infections, shortness of breath, asthma attacks and flare-ups of chronic obstructive pulmonary disease. Imran also said the ash may contribute to higher blood pressure and raise the risk of serious cardiovascular events, including heart attacks and strokes.

The effects can extend beyond the respiratory system. Ash may cause painful or watery eyes, itching and skin inflammation. Sudden evacuation and social isolation can also contribute to anxiety, stress, depression, confusion or difficulty concentrating among older people.

The Health Ministry urged residents in affected areas to wear N95 or KN95 masks and protective eyewear. Homes should be sealed as much as possible, and people cleaning ash should wet it first rather than sweeping it dry. Anak Krakatau has remained active for decades, with its most devastating recent event occurring in 2018, when an eruption caused a tsunami in the Sunda Strait that killed hundreds.

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Volcanic ash is different from ordinary dust. Its sharp silica particles can be dangerous to the lungs, eyes, and skin. When mixed with water, the ash can harden like cement, so improper cleaning can actually increase the risk.