The effects of climate change on human health, or becoming increasingly evident.

Climate change has a multifaceted impact on health, affecting both physical and mental well-being through various pathways.

Direct effects of climate include increased morbidity and mortality from heat-related illnesses due to rising ambient temperatures.

The World Health Organization (WHO) estimates that climate change could cause approximately 250,000 additional deaths per year between 2030 and 2050 due to heat exposure, diarrheal disease, malaria, dengue, coastal flooding, and childhood stunting.

Indirect effects of climate are mediated through changes in natural and socioeconomic systems.

Climate change can alter the distribution and incidence of vector-borne diseases such as malaria and dengue, as well as waterborne diseases.

Rising carbon dioxide levels can reduce the nutritional quality of staple crops like rice and wheat, exacerbating malnutrition and food insecurity.

Mental health is also adversely affected by climate change, with exposure to extreme weather events such as floods and hurricanes can increase the risk of depression, anxiety, and post-traumatic stress disorder (PTSD).

Vulnerable populations, including the elderly, children, and those with preexisting health conditions, are also disproportionately affected by these health risks of climate change.

Climate change has led to a rise of 1.1°C in mean global temperatures since the industrial revolution, with projected increases of 2 1/2 to 2.9°C by the end of the century.

Climate sensitive outcomes are related to extreme weather and climate events, heat stress, air quality, water quality and quantity, food supply quality and safety, vector distribution and ecology, and social factors driving conflict and migration.

Many client sensitive health outcomes cannot be adequately quantified and include: drowning, intentional violence, occupational injuries, and micronutritional deficiencies

Extreme weather events, such as ice storms, and tornadoes, heat, waves, floods, and wildfires cause increased traumatic human injuries, diseases, deaths, and mental health consequences.

Changes in climate are associated with migration of animals and insects that carry disease.

Changes in the mean temperature, precipitation, sea level, cause increase food and water insecurity, prevalence of aeroallergens inducing, respiratory disease, and the prevalence of many infectious diseases.

The frequency, duration, and intensity of heat waves have increased in recent decades, with the number of annual heat waves twice that of the 1980s, and heat wave season is more than three times as long as it was in the 1960s.

While heat extremes have increased in frequency and duration, cold extremes, have decreased.

Climate change results in emergence of types of infections that vary by geographic area, not previously known to be associated with these infectious agents.

Climate change can adversely affect mental health by forced human migration, or threatened livelihood.

Climate change has led to changes in the incidence and treatment of human diseases and their prevention.

Older age underlying health status, access to cooling, living in marginalized neighborhoods, socioeconomic status, and other factors influence the risk of mortality associated with weather pattern changes.

Climate change can contribute to displacement and migration of peoples, with negative effects on health and well-being.

Climate related has its can precipitate adverse events: stagnant water can be a breeding ground for mosquitoes that carry viruses and pathogens.

Approximately 8% of carbon emissions come from healthcare system.

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