Showing posts with label chemicals. Show all posts
Showing posts with label chemicals. Show all posts

Friday, April 16, 2010

Arthritis



Arthritis is the name given to a group of diseases that cause pain in the joints of the body. Arthritis in general, is a disorder of the joints. In fact, the word arthritis is of Greek origin, which means inflammation of a joint. In these diseases the connecting tissues of the joints get inflammed. Sometimes it can even cripple a patient. Although arthritis is more common in old age, it can occur to a person of any age. As per the available data the disease attacks twice as many women as men. It is not restricted to human beings only. It may even attack the animals. Today. scientists have sufficient evidence to prove that dinosaurs suffered from arthritis. It may be caused by inflammation or infection in the joints. Sometimes it is a symptom of another disease. There are various forms of this disease but the exact cause of most kinds of arthritis is not yet known. Some types of arthritis are caused by injuries or by high content of some special chemicals in the body. It may also be caused by the wearing away of cartilage in old age or by an allergic reaction involving joint tissues. A new form of arthritis has been discovered which is believed to be caused by a virus. It spreads among human beings by a bite from an insect, known as tick.

In this disease joints get swollen and crooked. The patient feels pain and finds it difficult to move. There is no absolute cure for arthritis, although it is usually treated by aspirin-type drugs to reduce pain and swelling. Physiotherapy has also been found very helpful in its treatment. Vigorous massage and transmission of sound waves into the body is also very effective in curing this disabling disease. The treatment of arthritis varies according to the stage of the desease in the patient at the time of medical check-up. In preliminary stages the treatment is directed towards the relief of symptoms, improvement in general health and performance of some physical exercises. In some kinds- of arthritis, diseased joints can be replaced with artificial ones.

Antibiotics

Antibiotics are chemicals. When these chemicals are put into the body they kill or stop the growth of certain kinds of germs. In other words they help your body to fight off disease. Many modern antibiotics are made from microbes, which are tiny living things. For example, bacteria and moulds are microbes. The microbes used in making antibiotics are chosen for their ability to produce chemicals that wage war on the microbes of disease. In simple terms this means that man is taking advantage of the struggle that goes on in nature among microbes.

Antibiotics are very effective at curing diseases and work in various ways. One antibiotic may act in different ways against different germs. It may kill the germs in one case and in another only weaken them and let the body's natural defences take over.

Today a lot of people are turning to natural remedies rather than prescribed drugs. These are made from natural products like roots, plants, flowers and trees

Cells


Apart from water the rest of the body is built from a huge number of complicated chemicals. These chemicals, together with water, are assembled into tiny building blocks called cells. Each cell is self-contained and has a particular function of the body. There are more than 50,000 billion cells in our body. The shape and appearance of a cell depends on what type of job it has to do. Nerve cells are long and thread – like and can carry messages around the body along the nervous system. Red blood cells are so tiny that they can only be seen under a microscope and are like flattened discs.

The sole function of the blood cell is to combine with oxygen in the lungs and to exchange the oxygen for carbon dioxide in the tissues. White blood cells are shapeless so they can squeeze between other cells and attack invaders such as bacteria. Other cells control the production of essential substances called proteins.