How does climate change affect human health?

Public health impact

Extremes in weather and temperature, increased pollution and environmental toxins, and changes in food security can all cause physical and mental health problems.

Mental health

Extreme temperatures can also change how certain medications, such as schizophrenia treatments, work in the body. In addition, they may affect people’s ability to regulate their body temperature correctly.

Infectious diseases

The reason for this is that changes in climate could increase the length of the seasons during which insects transmit infections. These changes could also expand the area in which they occur.

Air pollution

An increase in air pollution can pose a high risk to health. Higher levels of dust, ozone, and fine particles in the air can all reduce air quality and cause or exacerbate a range of health issues


Warmer temperatures can lead to an increase in pollen production. An increase in carbon dioxide can lead to higher levels of allergens from plants.

Food security

Weather changes affect crops and food production. Food prices may rise, which may cause people to adopt less healthful diets. Poor diets can lead to hunger, malnutrition, or obesity.

Natural disasters and extreme weather events can cause injury, mental health issues, increased risk of infection, and death. Damage to infrastructure can also cause long-term setbacks to health and well-being.

Central Rhine Railway, Germany

The Rhine Valley Line provides a relaxing trip through Germany's summertime countryside. Visit the attractive cities of Koblenz and Mainz along the route, and take in the soothing views of the riverfront vineyards.