Allergies and Cancer

Author : rajkumar r      Blog : Destination of Marvel      Date : 3/28/2013 4:31:00 AM

'AllergiesSometimes the immune system overreacts to a particular substance called an allergen, producing an allergy. This may result from eating certain foods, inhaling particles or exposure of the skin to chemicals. Common allergies include asthma, hay fever, urticaria, farmer’s lung, food allergies and contact dermatitis. Treatments include avoiding allergens and antihistamine drugs. In some cases anaphylactic shock the body reacts so violently to an allergen, such as a wasp sting,(...)'

Read full article

Infectious And Non Infectious Diseases

Author : rajkumar r      Blog : Destination of Marvel      Date : 3/18/2013 5:27:00 AM

' Infectious Diseases Infections arise when disease causing micro organisms penetrate the body’s physical defenses such as the skin and entire bloodstream and tissues near their route of entry can be by infection of infected droplets, ingestion of contaminated food or water, entry through broken skin, skin to skin contact, injection by needle or other sharp object, sexual contact, insect bites, or by transmission from mother to fetus. In most of the case the body immune sy(...)'

Read full article

Immunization

Author : rajkumar r      Blog : Destination of Marvel      Date : 2/26/2013 8:42:00 AM

'While immunity is being acquired a person develops symptoms of the disease. But some infections can be prevented by allowing the body to acquire active immunity artificially. This is achieved by the introduction into the body of a vaccine made from dead or weakened microorganisms that are no longer capable of causing the disease itself. When injected into the skin or bloodstream (or as in the case of polio vaccine, swallowed) they stimulate B lymphocytes to produce antibodies but no(...)'

Read full article

Diets and Dieting!

Author : rajkumar r      Blog : Destination of Marvel      Date : 2/20/2013 10:03:00 AM

'The word diet is commonly used these days to describe an eating regime followed by someone in order for him or her to lose weight, even though in its correct usage the word simply describes what we eat each day. A diet designed for weight loss is better described as a slimming diet, and there are many of these to choose from. As the percentage over weight and obese children and adults in the western world steadily increases as a result of increased in activity and increased consumpt(...)'

Read full article

Bulimia nervosa and Food Poisoning

Author : rajkumar r      Blog : Destination of Marvel      Date : 12/20/2012 7:18:00 AM

'Bulimia nervosa Like anorexia, bulimia is an eating disorder found most commonly among younger women, often those who have had anorexia. Bulimics crave food but fear becoming fat. They indulge in binge eating by consuming vast amounts of food and then induce vomiting and use laxatives. This constant bingeing and vomiting can cause severe medical problems. Sufferers from bulimia require the same medical care as anorexics. Food poisoningThis refers to illnesses caused by eat(...)'

Read full article

Obesity and Anorexia Nervosa

Author : rajkumar r      Blog : Destination of Marvel      Date : 12/10/2012 9:55:00 AM

'Obesity: 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 diabet(...)'

Read full article

Diet and Diseases

Author : rajkumar r      Blog : Destination of Marvel      Date : 12/9/2012 9:19:00 AM

'Fats in foods are divided into saturated fats found mainly in meat and dairy products and unsaturated fats- found in fish and vegetable oils. Research has established a link between the high level of consumption of saturated fats in northern Europe and USA and the incidence of coronary heart disease, leading to death from heart attacks. Coronary artery disease is caused by the buildup of obstructions called atheromas that contain cholesterol.Studies have indicated a strong link betw(...)'

Read full article

A Healthy Diet

Author : rajkumar r      Blog : Destination of Marvel      Date : 12/1/2012 7:05:00 AM

'The food that we eat provides us with the energy to power all our body activities, the materials for the growth and repair of body tissues, and the vital chemicals essential for the metabolic reactions that take place in all cells. To be healthy, a diet should:Consist of a wide variety of natural foods that provide a balance of carbohydrates, fats,, proteins, vitamins, minerals and fibre. Supply the body with sufficient energy to meets its needs;Include only low levels of foods(...)'

Read full article

Vitamins and Minerals

Author : rajkumar r      Blog : Destination of Marvel      Date : 11/20/2012 7:02:00 PM

'     Vitamins and minerals are substances required in small amounts, that essential for the normal, healthy functioning of the body normal growth and development, energy productions, body maintenance, and general well being and vitality.       Vitamins are a diverse group of organic substances that cannot be manufactured by the body – except for the vitamin D (which is produced in the skin when it is exposed to sunlight) and niacin ((...)'

Read full article

Sleep and Sleep Disorders

Author : rajkumar r      Blog : Destination of Marvel      Date : 11/14/2012 4:18:00 AM

'    Sleep occupies around one third of a person’s life, although the hours we sleep decrease as we age. A one year child sleeps for about for about 14 hours each day, while a five year old needs around 12 hours. About 90 percent of adults sleep for six to nine hours per night, with most people sleeping 7.5 hours to 8 hours. Less than 6 hours sleep at night generally leads to daytime sleepiness. Elderly people tend to sleep less at night but doze during the day. &(...)'

Read full article

Sleep

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 9/11/2012 6:29:00 AM

'What is sleep? Sleep is a state of altered consciousness and not a turning off of the brain. Although sleep appears to be the opposite of wakefulness, these two stages have a lot in common. Thinking and memory are active in both states, and a sleeping person is sensitive to their crying baby. Studies of sleeping deprivation have shown that sleep is a fundamental need that human cannot do without it. The brain needs periods of sleep in order to rest repair itself and process informat(...)'

Read full article

Human Mind

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 8/15/2012 6:15:00 PM

'The human mind is the totality of all conscious and unconscious mental processes that have been occurred or are occurring in the brain. Mind disorders, from mild emotional disorders to severe illness, are studied and treated in various ways. Psychology is the scientific study of the mind and behavior. Psychology involves research into feelings, intelligence, learning, memory perception, personality development, speech and thought. Psychologists may also diagnose and treat mental, be(...)'

Read full article

World conservation strategy

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 7/30/2012 6:23:00 PM

'Plants and animals are unaware of Political boundaries conservation must be based on worldwide strategies. In 1980 the World Conservation Strategy was launched by IUCN (International Union for Conservation of Nature and Natural Resources), WWF (World Wildlife Fund) and UNEP (United Nations Environment Programme). It said that conservation of three factors was needed: 1. Life support cycles, water, soil and air; 2. Species of plants and animals; 3. Genetic diversity. This document b(...)'

Read full article

Coral reefs and Mangrove Swamps

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 7/5/2012 4:35:00 AM

'Coral reefs are found where the average annual temperature of the sea does not drop below 21.C. they are the richest of marine environments, estimated to contain one third of the world’s fish species and up to 500,000 animal species in all. Reef corals can only thrive in shallow water, so are often close to land, and therefore at special risk from human activities. Dangers include pollution; dredging and removal for construction purposes; damage by collection of coral and other inve(...)'

Read full article

Wetlands

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 6/24/2012 6:03:00 PM

'The wetland ecosystem- rivers, streams, lakes, ponds and swamps- is under threat. Currently covering about 6 percent of the Earth’s surface, wetlands are shrinking rapidly. Destruction of wetlands may seem to bring nothing but benefit. Draining a marsh creates fertile land for cultivations and reduces breeding areas for insects such as mosquitoes. Damming a river provides a water supply, and may mean a source of power as well.But many changes to water system carry seeds of disaster(...)'

Read full article

Habitats in Danger

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 6/19/2012 6:01:00 PM

'Habitat destruction is the greatest threat to plant and animal species worldwide. In some cases, such as felling of tropical forests or draining of wetlands, damage is frequently done under the impression that the environment is being improved for human food production or habitation. In others, lack of understanding of the importance of particular environment in the life cycles of certain species has led to their downfall. Drainage of mangrove swamps, nurseries for many kinds of fis(...)'

Read full article

Human and other living creatures

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 6/16/2012 6:42:00 PM

'From the time when human beings first began to grow crops and live in settled communities, their numbers increased fairly steadily until about 1700. Shortly after this the industrial revolution led to a doubling of the population in about 100 tears. In 1800 the world‘s population was around one billion. By 1990, the numbers had risen to over five billion people will be looking for shelter and food somewhere on the earth. One species cannot increase explosively without affecting all(...)'

Read full article

Extinction of Plants

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 6/11/2012 4:24:00 AM

'Plant extinctions have followed the same pattern as animal extinctions. Destruction of environment, particularly on isolated islands, has led to the most dramatic losses. On Hawaii, for example, about 300 plant species have become extinct within the last 300 years. On St. Helena, only 20 of over 100 species of native plants survive and of these 15 are in danger of extinction. It is said that of Barbados all native trees were felled within 40 years of the island’s discovery by Europ(...)'

Read full article

Domesticated Animals

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 6/4/2012 6:52:00 PM

'When an animal species is domesticated, it is changed in many ways from its wild ancestors. it may become bigger, stronger and more fecund than the ancestral form. Remaining wild animals are regarded as weeds to be intractable and may have characteristics that have been bred out over generations.Camel: Date of first domestication uncertain, perhaps by 4000BC. Dromedary, one humped camel unknown as a wild animal. Bactrian camels endangered.Cat: First domesticated before 1500 BC. Now(...)'

Read full article

Air-borne and acquatic mammals

Author : rajkumar.rr      Blog : Destination of Marvel      Date : 5/16/2012 8:24:00 AM

'Most mammals are firmly based on the ground or in the trees. Some can glide from tree to tree on outstretched flaps of skin, but only the bats can really fly. Their wings are supported on long fingers and run along the side of the body to take in the back legs and tails well. They are nocturnal and find their way about by echolocation – sending out high pitched sounds and listening for the echoes coming back from nearby objects. They can pick up the echoes from flying insects which (...)'

Read full article