The likely impact on human health can be determined by consideration of the role played by climatic factors in the present-day. Some of these influences may decrease in importance, reducing associated impacts on human health, whilst others will become more important. First, weather and climate play the role of a direct agent. The solar regime in low latitude areas with its high radiation intensity results in heat illnesses and sunstroke, commonly found in summer in almost all low-lying areas. The prolonged stress imposed on the body's heat-adjusting system in hot and humid environments is also the cause of asthenia, giving rise to the development of other diseases.
Low humidity facilitates sweat evaporation and the maintenance of the heat balance of the body.
Due to quick evaporation, the body may lose water and the mineral balance is disrupted, leading to exhaustion. The existence of the cold winter in the north, especially in the mountain areas, is the cause of syndromes relating to cold, such as frostbite, pneumonia, bronchitis and other respiratory diseases. These may become reduced in frequency as temperatures rise. Second, climate and weather have the role of a stimulant, resulting in complaints related to the cardio-vascular, respiratory, nervous and digestive systems. In the northern winter, the prolonged cold and damp air is a favourable element for chronic diseases of the respiratory system such as tuberculosis, whooping cough, sore throat and bronchitis.