Effects on Human Health

While climate change can indirectly lead to mental health problems, such as anxiety and depression, due to its impacts on livelihoods, food security, and social cohesion, it is not a direct effect.

Climate change can increase the geographic range of vectors by expanding their suitable habitats, shorten the incubation period of pathogens by increasing temperatures, and increase the virulence of pathogens by altering their genetic makeup.

Children, elderly people, and people with pre-existing health conditions are more susceptible to the health effects of climate change due to their weaker immune systems and reduced ability to adapt to changes in temperature and other environmental conditions.

Climate-induced food insecurity refers to the situation where climate change-related factors, such as changes in temperature, precipitation patterns, and extreme weather events, disrupt food production, distribution, and access, leading to food shortages and price increases.

While climate change can lead to increased anxiety, depression, and PTSD due to the stress and trauma associated with extreme weather events and environmental changes, it is not known to directly increase resilience.

Climate change can decrease the concentration of nutrients in crops, such as proteins, vitamins, and minerals, due to changes in temperature, precipitation patterns, and carbon dioxide levels. It can also alter the composition of nutrients, such as the ratio of carbohydrates to proteins.

Air pollution has been linked to increased risk of respiratory illnesses, cardiovascular diseases, and cancer, but it is not known to improve cognitive function.

Climate change is leading to an increase in the frequency and intensity of extreme weather events, such as heat waves, droughts, floods, and wildfires, due to changes in atmospheric circulation patterns and the increased energy in the climate system.

Heat waves are associated with increased risk of heat stroke, dehydration, and cardiovascular diseases, but not hypothermia.

Climate change is expanding the geographic range of vector-borne diseases, such as malaria, dengue, and Zika, by creating more suitable habitats for the vectors that transmit these diseases.

Droughts are associated with increased risk of food shortages, water shortages, and infectious diseases, but not improved air quality.

Climate change can lead to increased anxiety and depression due to the stress and trauma associated with extreme weather events, environmental changes, and the uncertainty about the future.

Floods are associated with increased risk of drowning, waterborne diseases, and structural damage, but not improved sanitation.

Climate change can increase the concentration of waterborne pathogens, such as bacteria, viruses, and parasites, in water bodies due to increased runoff, flooding, and changes in water temperature.

Wildfires are associated with increased risk of smoke inhalation, burns, and mental health problems, but not improved air quality.