Climate is the average weather in a place over a long period. A shift in those average conditions is known as climate change. Climate is a crucial part of the natural environment in which human beings live, any climate change will affect the natural ecosystem, human health and social economy. The impact of global climate change on human beings will be multi-layered, multi-scale and comprehensive. The rapid climate change we are now seeing is caused by various factors which are caused naturally or are due to anthropogenic activities like using gas, oil, and coal for factories, transportation and at home. Burning of fossil fuels releases greenhouse gases - mostly carbon dioxide (CO2). Greenhouse gases trap heat from the Sun and cause the planet's temperature to rise. The world is now about 1.1`C warmer than it was in the 19th Century - and the amount of CO2 in the atmosphere has risen by 50%. Climatological research shows that Earth’s climate will change due to the accumulation of greenhouse gases in the atmosphere. The rise in temperature at an unusual rate of (0·5ºC) since the mid1970s is substantially attributable to this anthropogenic increase in greenhouse gases. In view of greenhouse gas longevity and the climate system’s inertia, climate change will continue for at least several decades even if we take radical international pre-emptive actions very soon. This paper throws the limelight on how climate change has different impacts on human health. It mainly explores the progress that researchers have made on the direct and indirect impacts of climate change. It considers that the impacts of climate change on human health mainly include the following aspects: extreme weather events; heat wave effects, insect-borne infectious diseases, hunger and malnutrition. The impact of climate change on health must be assessed against a constantly changing background, population health status, influenced by a diversity of factors, varies over time. Infectious diseases rise and fall in response to the rhythms and disjunctions of nature and response to local demographics, cultural and technological changes. Food supplies are affected by natural disasters, the abundance of pests and predators, civil war and patterns of commerce. Chronic non-infectious diseases like Heart disease, diabetes and cancer, reflect much about the material of development and their associated lifestyles. Each of these elements of population health must be considered when assessing the human impacts of climate change. Climate change will have many effects on health over the coming decades some direct impacts of Climate change will affect the potential incidence, seasonal transmission, and geographic range of various vector-borne diseases. These diseases would include yellow fever, malaria, various types of viral encephalitis, dengue fever, schistosomiasis (water-snails), Lyme disease (ticks), leishmaniasis (sand-flies: South America and Mediterranean coast), and onchocerciasis (West African river blindness, spread by black flies). In the end, the paper presents a few suggestions for ways to tackle the prevention of various diseases caused due to climate change.

___________________________________________________________________________________

Keywords: Climate, Health, Global Warming, Diseases, Environment.