What are the links between health risks and environmental pollution?如题写一篇200词的小短文,好的话再追加100分
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 04:39:25
What are the links between health risks and environmental pollution?如题写一篇200词的小短文,好的话再追加100分
What are the links between health risks and environmental pollution?如题写一篇200词的小短文,好的话再追加100分
What are the links between health risks and environmental pollution?如题写一篇200词的小短文,好的话再追加100分
Air pollution can affect our health in many ways with both short-term and long-term effects.Different groups of individuals are affected by air pollution in different ways.Some individuals are much more sensitive to pollutants than are others.Young children and elderly people often suffer more from the effects of air pollution.People with health problems such as asthma,heart and lung disease may also suffer more when the air is polluted.The extent to which an individual is harmed by air pollution usually depends on the total exposure to the damaging chemicals,i.e.,the duration of exposure and the concentration of the chemicals must be taken into account.
Examples of short-term effects include irritation to the eyes,nose and throat,and upper respiratory infections such as bronchitis and pneumonia.Other symptoms can include headaches,nausea,and allergic reactions.Short-term air pollution can aggravate the medical conditions of individuals with asthma and emphysema.In the great "Smog Disaster" in London in 1952,four thousand people died in a few days due to the high concentrations of pollution.
Long-term health effects can include chronic respiratory disease,lung cancer,heart disease,and even damage to the brain,nerves,liver,or kidneys.Continual exposure to air pollution affects the lungs of growing children and may aggravate or complicate medical conditions in the elderly.It is estimated that half a million people die prematurely every year in the United States as a result of smoking cigarettes.
Research into the health effects of air pollution is ongoing.Medical conditions arising from air pollution can be very expensive.Healthcare costs,lost productivity in the workplace,and human welfare impacts cost billions of dollars each year.
Examples of short-term effects include irritation to the eyes, nose and throat, and upper respiratory infections such as bronchitis and pneumonia. Other symptoms can include headaches, nausea, and all...
全部展开
Examples of short-term effects include irritation to the eyes, nose and throat, and upper respiratory infections such as bronchitis and pneumonia. Other symptoms can include headaches, nausea, and allergic reactions. Short-term air pollution can aggravate the medical conditions of individuals with asthma and emphysema. In the great "Smog Disaster" in London in 1952, four thousand people died in a few days due to the high concentrations of pollution.
收起
With the development of teconology, more and more family own their private car. As a reasult, too many cars have created a lot of serious problem in our world. In my opinion, cars are responsible for ...
全部展开
With the development of teconology, more and more family own their private car. As a reasult, too many cars have created a lot of serious problem in our world. In my opinion, cars are responsible for a good part of air pollution. All the time, they are pumping huge amounts of waste gases into the air, which are very harmful, causing disease and even death. What measures should we take to deal with the air pollution caused
by cars?
One possible solution is to design and develop clean cars and clean fuels. In some cities, cars and buses are now driven by electricity or natural gas, which doesn’t give
off too much carbon dioxide. But it may take decades for the new models of clean
cars to completely replace the traditional ones. Another way is to restrict the use of
private by supply the effective and convenient public vehicles. If we do that like what I
say, we may get a more clean sky.
收起
Cambridge scientists are advocating additional research into the little understood links between environmental pollution and type 2 diabetes.
In the most recent edition of the Lancet, Drs. Oliver ...
全部展开
Cambridge scientists are advocating additional research into the little understood links between environmental pollution and type 2 diabetes.
In the most recent edition of the Lancet, Drs. Oliver Jones and Julian Griffin highlight the need to research the possible link between persistent organic pollutants (POPs, a group which includes many pesticides) and insulin resistance, which can lead to adult onset diabetes.
In their commentary, Dr Jones and Dr. Griffin cite peer reviewed research including that of Dr D Lee, et al, which demonstrated a very strong relationship between the levels of POPs in blood, particularly organochlorine compounds, and the risk of type 2 diabetes.
“Of course correlation does not automatically imply causation,” says Dr. Jones. “But if there is indeed a link, the health implications could be tremendous. At present there is very limited information. Research into adult onset diabetes currently focuses on genetics and obesity; there has been almost no consideration for the possible influence of environmental factors such as pollution.”
Interestingly, in the Lee study an association between obesity and diabetes was absent in people with low concentrations of POPs in their blood. In other words, individuals were more at risk of diabetes if they were thin with high levels of POPs in their blood than if they were overweight but with low levels of POPs.
Dr Jones said: “I think research should be carried out to first test the hypothesis that POPs exposure can cause diabetes, perhaps using cell or tissue cultures, so we know for sure if this can occur. Assuming POPs can have this effect, the next step would be to try and develop a method of treatment for those people who might be affected.”
POPs came into prominence as effective pesticides with the introduction of DDT in the 1940s. However, many of these chemicals, including DDT, fell out of favour after they were blamed for the declining number of wild birds and other animals (brought to the public's attention in Rachel Carson's Silent Spring) and the possible negative human health effects. As the compounds biodegrade slowly, they continue to find their way into the food chain and ultimately into the blood streams of individuals even though many of these toxins were banned many years ago. Additionally, these compounds can persist in body fat for very long periods of time following exposure.
收起