Farms Poison Our Air: Ammonia's Health Threat

Agriculture is the overwhelming driver of ammonia pollution worldwide, responsible for 80% to 90% of emissions. This gas, primarily from decomposing animal waste and fertilizers, reacts in the atmosphere to form fine PM2.5 particles. These particles can penetrate deep into the lungs, aggravating respiratory conditions like asthma and COPD, and contributing to heart disease and premature death.

Beyond air quality, ammonia's nitrogen content can contaminate water sources. When converted to nitrate, it can leach into groundwater and surface waters. Consuming contaminated water or food can lead to nitrate intake, which poses a particular risk to infants, potentially causing fatal blue baby syndrome. Long-term exposure to nitrate and nitrite has also been linked to increased rates of digestive cancers.

While the body naturally produces some ammonia, exposure through polluted air, water, and food presents additional health challenges. Research is exploring the role of gut bacteria in processing ammonia, with some species showing potential to help regulate levels. However, treatments for high ammonia levels, whether from environmental exposure or internal production, are still under investigation.