Tuesday, May 21, 2013
Sometimes antibodies themselves, from external sources, are injected into the body to provide protection without stimulating the immune system. This is called artificial passive immunity and is useful in providing instant protection where a disease might kill the person before their active immune system has time to come into operation. Examples include gamma globulin, given against hepatitis A infection; am antitoxin to treat tetanus; and anti rabies injection.
Thursday, March 28, 2013
Monday, March 18, 2013
Non Infectious Diseases
Tuesday, February 26, 2013
Booster shots may be needed at later dates to ensure that active immunity is still effective. Vaccines are available against many formerly dangerous diseases including polio, measles an d diphtheria. Immunization programmes for children have virtually eliminated most common childhood diseases, and confer immunity into adult life. But vaccination is advisable for travelers to countries where they may contract potentially fatal diseases not previously encountered. Sometimes antibodies themselves from external sources are injected into the body to provide protection without stimulating the immune system. This is called artificial passive immunity and is useful in providing instant protection where a disease might kill the person before their active immune system has time to come into operation. Examples include gamma globulin, given against hepatitis A infection; anti toxin to treat tetanus; and anti rabies injections.
Wednesday, February 20, 2013
Other sliming diets put the body in a defensive stance. Because its calorie intake has been severely reduced the body reduces its metabolic rate to conserve its fat energy reserves and actually burns lean muscle tissues in order to provide energy. When the diet stops the body diverts as much spare food energy as possible to build up its fat reserves in case another calorie famine happens and in consequence the diet regains lost weight and ends with more fat than before
Thursday, December 20, 2012
Monday, December 10, 2012
The condition in which the body has so much fat is called obesity. Someone is considered to be obese if their weight is 20 percent over their ideal maximum or if their BMI is greater than 30. Around 30 percent of people in western countries are overweight and around five percent of them are obese. Long term obesity is a serious threat to health. It increases significantly the chances of developing high blood pressure, coronary artery disease, stroke, adult onset diabetes mellitus, certain cancers, osteoarthritis, back pain and varicose veins. Obese patients are advised under medical supervision, to lose weight using a calorie reduced diets and increased aerobic exercise.
Popularly, but incorrectly, known as the “slimmers’ disease”, anorexia nervosa is an eating disorder found mainly among teenage girls and young women, and only rarely increases. In fact, one in hundred of the women suffer from the condition and increasing to one in twenty in those categories of women, such as dancers actors especially concerned with their bodies. Anorexia may be a phobia about being fat or a symptom of mental illness. Whatever its cause, however anorexia is a serious illness in which the individual starves herself and may die. She not only loses her appetite but, more seriously, fails to have a normal perception of the size and shape of her body- she thinks she is fat even when she is way below her normal weight. The main features of anorexia are as follows; excessive weight loss, over activity, secretive and defensive behavior, being choosy about food, obsessive exercising, tiredness always feeling cold , induced vomiting, use of laxatives, thinning of hair on heat, appearance of Languo (Baby hair) on the body, dry skin and cessation of periods (amenorrhea). Anorexics require medical treatment and counseling.