Environmental science basically deals with the study of the earth and its changes over time. It also takes into account human disturbances to the land such as erosion, climate change, air pollution, etc. The environment is continually being changed by human activities both on a global scale and by individual countries. Some of the areas that are particularly vulnerable to human influences are the arid and semi-arid parts of the world. Other areas that are more susceptible include the coastal areas, mountain ranges, deserts, and polar regions.
Natural environmental factors do not necessarily include any man-made effect. Therefore, the above two categories of environmental factors are not excluded from the description. The natural environment or planetary environment encompasses all living and non-lived things existing naturally, which means excluding the phenomenon of manmade change. The word is often used to describe the Earth or parts of the Earth.
Studies have shown that there are several differences across environments for different types of disease. This is because different types of diseases tend to affect people in different ways and to respond to different environmental factors differently. For example, it has been observed that there are major health differences across genders when it comes to gastrointestinal tract conditions like irritable bowel syndrome (IBS) and inflammatory bowel disease (IBD). Both men and women are equally affected by colon cancer. These are only a few examples. As you can see, environmental factors do have a significant impact on health outcomes for a wide variety of diseases.
Another environmental health disadvantage is related to physical conditions. A typical environmental health disadvantage is associated with physical conditions affecting the ability of the body to use energy or the capacity of the body to tolerate stress. These include obesity, asthma, allergies, arthritis, diabetes, heart disease, infertility, and low birth weight. It has been observed that physical conditions are among the top five environmental health disadvantage factors.
The effects of environmental factors on health outcomes have also been studied over the past few decades. Based on these studies, it has been found that exposure to certain environmental risks such as air pollution, ultraviolet radiation, cigarette smoke, radon gas, pesticides, lead, noise, and household toxicants has significantly decreased over the past few years. However, many of the changes were not large enough to make a significant difference in overall health. In fact, there is still debate as to whether or not the environmental quality of the air is good or bad. This continues to be an area of great interest for researchers around the world.
One of the biggest environmental issues of the day is the rising level of toxic wastes being produced due to excessive land use in developing countries. In most developing countries, it is impossible to develop any type of infrastructure to efficiently and effectively utilize the land for its intended purpose. This waste, if not disposed of properly, can become a major health concern for the inhabitants of the towns and cities where it lands. Efforts are being made by various environmental groups, including private automobile manufacturers, to lobby the governments of these regions to change land-use practices so that more opportunity exists to develop the land for public use.
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