The global warming effect is really a worry issue all over the world. Taking this into consideration, the WHD (World Health Organization) has selected the theme “Protecting health from climate change” this year. WHO estimated that climate change directly or indirectly contributes to about 77,000 deaths annually in Asia and the Pacific. Among the potential effects of global warming is the appearance of mosquitoes where they were previously absent, with the accompanying threat of malaria and dengue fever. Some regions might be at risk of reduced rainfall, causing a shortage of fresh water and the resultant danger of water borne diseases. Millions of people could be at risk of malnutrition and hunger if arable land becomes unworkable. The increasing frequency of summer heat waves in temperate zones and typhoon, hurricanes and Hoods throughout the world is signs of changing weather and climate patterns.

Health hazards from climate change are diverse and global in nature. The hazards range from the risks of extreme weather events to changes in the dynamics of infectious diseases. Climate change is a significant and emerging threat to public health and changes the way we must look at protecting vulnerable populations. There is overwhelming evidence that humans are affecting the global climate and highlighted a wide range of implications for human health, Climate variability and changes cause death and disease through natural disasters, such as heat waves, floods and draughts. In addition, many important diseases are highly sensitive to changing temperatures and precipitation. These include common vector-borne diseases such as malaria and dengue; as well as other major killers such as malnutrition and diarrhea. The impacts of climate on human health will not be evenly distributed around the world. Developing country populations, particularly in small islands, stales, arid and high mountain zones   and densely populated coastal areas, are con-sidered to be particularly vulnerable.

The most obvious impact of global warming will be the direct effect - a warmer planet will experience more extreme heat waves. It is difficult to predict the future effect on mortality levels, because as heat waves become more frequent, we can expect societies to adjust, technologically, behaviorally and physiologically. Technological adaptations such as the installation of collective air conditioners and the construction of heat-minimizing houses will happen more quickly among the rich, so heat waves are likely to have a disproportionate effect in less developed countries and in the poorer segments of rich countries.

Many infectious diseases are dependent on vector organisms, which are sensitive to environmental factors and therefore will be affected by global warming. Biological modeling under various climate scenarios suggested a widening of the potential transmission zone of some disease causing pathogens and their vectors, such as mosquitoes. Food and water borne diseases are also susceptible to climate change. If temperatures rise under global warming, the incidence of diseases caused by food-poisoning and by the contamination of drinking and swimming water could increase swimming water could increase dramatically. Through increased collaboration, the global community will be better prepared to cope with climate related health challenges worldwide.