Any loud sound that can harm a person's health is noise pollution. There are more people and more noise in our world today than ever before. There are also more machines and engines.
One hundred years ago, noise pollution wasn't as big a problem as it is today. 1.
Nowadays many people are not aware of the many noises around them. Loud noises may be a part of everyday living. 2. Yet noise can affect a person's health. Suppose a person sneaked up behind you. This person made a loud noise and scared you. 3. Your heartbeat rate would increase causing your blood pressure to rise. Constant noise can produce stress which also causes the above effects.
There is also a relationship between noise and disease. 4. When you don't get enough sleep, your body becomes tired. A tired body is a poor defence against disease.
Noise can also affect your study habits and your grades. If you try to do homework while a stereo is playing loud music, you might not be able to concentrate. You will make more mistakes in your homework. 5.