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Articles explaining about diseases and what is being done to cure them.

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KidsHealth.org Search Results : diseases

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KidsHealth is the #1 most-trusted source for physician-reviewed information and advice on children's health and parenting issues. For parents, kids, teens, and educators, in English and in Spanish.

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AIDS (short for Acquired Immune Deficiency Syndrome) A disease that weakens a body's immune system, greatly lowering resistance to infections and some cancers. It is caused by the HIV germ. (See also HIV)

antibiotic A germ-killing substance prescribed as a medicine (or sometimes as a feed additive to promote the growth of livestock). It does not work against viruses.

antibody Any of a large number of proteins that the body produces as part of its immune response. Antibodies neutralize, tag or destroy viruses, bacteria and other foreign substances in the blood.

antigen A substance capable of causing an immune reaction.

bacteriophage Also known simply as a phage. This is a type of virus that infects - and ultimately kills - bacteria, but not before reproducing and spreading.

bacterium (plural bacteria) A single-celled organism. These dwell nearly everywhere on Earth, from the bottom of the sea to inside animals.

cell The smallest structural and functional unit of an organism. Typically too small to see with the naked eye,it consists of watery fluid surrounded by a membrane or wall. Animals are made of anywhere from thousands to trillions of cells, depending on their size.

DNA (short for deoxyribonucleic acid) A long, double-stranded and spiral-shaped molecule inside most living cells that carries genetic instructions. In all living things, from plants and animals to microbes, these instructions tell cells which molecules to make.

Ebola A family of viruses that cause a deadly disease in people. All cases have originated in Africa. Its symptoms include headaches, fever, muscle pain and extensive bleeding. The infection spreads from person to person (or animal to some person) through contact with infected body fluids. The disease gets its name from where the infection was first discovered in 1976 - communities near the Ebola River in what was then known as Zaire (and is now the Democratic Republic of Congo).

gene (adj. genetic)A segment of DNA that codes, or holds instructions, for producing a protein. Offspring inherit genes from their parents. Genes influence how an organism looks and behaves.

genetic Having to do with chromosomes, DNA and the genes contained within DNA. The field of science dealing with these biological instructions is known as genetics. People who work in this field are geneticists.

germ Any one-celled microorganism, such as a bacterium, fungal species or virus particle. Some germs cause disease. Others can promote the health of higher-order organisms, including birds and mammals. The health effects of most germs, however, remain unknown.

HIV (short for Human Immunodeficiency Virus) A potentially deadly virus that attacks cells in the body's immune system and causes acquired immune deficiency syndrome, or AIDS.

immune system The collection of cells and their responses that help the body fight off infections and deal with foreign substances that may provoke allergies.

immunity The ability of an organism to resist a particular infection or poison by producing and releasing special protective cells.

infection A disease that can spread from one organism to another.

influenza (or flu) A highly contagious viral infection of the respiratory passages causing fever and severe aching. It often occurs as an epidemic.

measles A highly contagious disease, typically striking children. Symptoms include a characteristic rash across the body, headaches, runny nose, and coughing. Some people also develop pinkeye, a swelling of the brain (which can cause brain damage) and pneumonia. Both of the latter two complications can lead to death. Fortunately, since the middle 1960s there has been a vaccine to dramatically cut the risk of infection.

molecule An electrically neutral group of atoms that represents the smallest possible amount of a chemical compound. Molecules can be made of single types of atoms or of different types. For example, the oxygen in the air is made of two oxygen atoms (O ₂), but water is made of two hydrogen atoms and one oxygen atom (H ₂ O).

proteins Compounds made from one or more long chains of amino acids. Proteins are an essential part of all living organisms. They form the basis of living cells, muscle and tissues; they also do the work inside of cells. The hemoglobin in blood and the antibodies that attempt to fight infections are among the better-known, stand-alone proteins.Medicines frequently work by latching onto proteins.

RNA A molecule that helps "read" the genetic information contained in DNA. A cell's molecular machinery reads DNA to create RNA, and then reads RNA to create proteins.

species A group of similar organisms capable of producing offspring that can survive and reproduce.

vaccine A biological mixture that resembles a disease-causing agent. It is given to help the body create immunity to a particular disease. The injections used to administer most vaccines are known as vaccinations.

vector (in medicine) An organism that can spread disease, such as by transmitting a germ from one host to another.

virus Tiny infectious particles consisting of RNA or DNA surrounded by protein. Viruses can reproduce only by injecting their genetic material into the cells of living creatures. Although scientists frequently refer to viruses as live or dead, in fact no virus is truly alive. It doesn't eat like animals do, or make its own food the way plants do. It must hijack the cellular machinery of a living cell in order to survive.

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AIDS (short for Acquired Immune Deficiency Syndrome) A disease that weakens a body's immune system, greatly lowering resistance to infections and some cancers. It is caused by the HIV germ. (See also HIV) antibiotic A germ-killing substance prescribed as a medicine (or sometimes as a feed additive to promote the growth of livestock).

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This gives background information about diseases for those who need to dig a little deeper.

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Kids learn about infectious diseases including pathogens such as viruses, bacteria, parasites, and fungi as well as transmission and other types of diseases.

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An article about children getting diabetes.

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When she was 9 years old, Ann Albright went to the doctor with odd flulike symptoms. She was exhausted. She had to go to the bathroom frequently in the middle of the night. She was always thirsty. Even her vision was blurry.

After a few tests, the doctor pulled Albright's mother aside.

"I still remember it very vividly," says Ann Albright, now more than 40 years later. "My mom left the room with the doctor and came back in with tears running down her cheeks."

The verdict: diabetes, a disease that affects the way people process food.

At the time, the 1960s, the diagnosis meant that young Ann would never have the carefree childhood her mother wanted for her. For the rest of her life, she would have to give herself shots several times a day. She would need to be very careful about what she ate. And she might not realize all of her dreams in life.

"In the era I was diagnosed, most people were told they'd have a shorter life span," Albright says. "As a little girl with diabetes moving into adulthood, I wondered would I be able to have kids? Would I be able to have a life?"

Science has come a long way since then, says Albright, partly as a result of her own efforts: She's now a doctor and diabetes researcher at the Centers for Disease Control and Prevention in Atlanta. Since her diagnosis, researchers have developed better technologies, more effective medicines and a sharper understanding of how diabetes works.

Despite the advances, though, scientists still can't answer a lot of basic questions about what causes diabetes. There still is no cure. And living with the disease remains difficult.

"Everything changes" after a diabetes diagnosis, says Ali Reed, a pediatric endocrine fellow at the University of California, San Francisco. "Life becomes more complicated."

What's more, diabetes is on the rise - in both adults and kids. One version of the disease, called type 2 diabetes, is increasing at an especially alarming rate.

Scientists have linked type 2 diabetes with obesity. So now, more than ever, doctors are urging young people to start developing healthy habits as early as possible.
Breakdown
Diabetes refers to a group of diseases, but there are two main kinds: type 1 and type 2. In both types, the trouble begins with the body's ability to deal with sugar.

Sugar is the body's main fuel source. When you eat, your digestive system breaks down your food into basic parts, including proteins, fats and a simple sugar called glucose. Glucose gets absorbed through the intestines. From there, it enters the bloodstream. Circulating blood delivers glucose to all the cells, which convert it into energy.

At least, that's what's supposed to happen. In people with diabetes, however, sugar can't get from the bloodstream into the cells. A hormone, or messenger molecule, called insulin is normally responsible for that transfer. But in diabetics, insulin doesn't do its job.

As a result, sugar builds up in the bloodstream. When levels of sugar in the blood stay high, the condition is called chronic. And for reasons scientists don't yet understand, chronically high blood sugar can lead to blindness, kidney damage, limb amputations, heart attacks and more.

"It's not a death sentence, but it's a very serious disease," Albright says.
Two types
Exactly how diabetes affects a patient's life depends in part on which type of diabetes a person has. There are important differences between the two main types.

Type 1 diabetes is the kind Albright has. In this version of the disease, the body stops producing insulin. Symptoms usually begin in kids or teenagers.

After they're diagnosed and for the rest of their lives, type 1 diabetics need to regularly test their blood sugar levels with a pinching tool that draws a little blood. They also have to give themselves shots of insulin several times a day to control blood sugar levels. So far, scientists don't know how to prevent type 1 diabetes.

Type 2 diabetics make insulin, but their bodies don't use the hormone properly. Type 2 diabetes is far more common than type 1, and most people who have type 2 are adults. These days, though, more and more kids are coming to their doctors with symptoms of type 2 diabetes.

Doctors already know that adults who develop type 2 diabetes tend to be overweight or obese. And as kids have become increasingly overweight, the disease has started appearing at younger and younger ages.

Shorrocks/iStockphoto

As recently as a decade ago, type 2 diabetes was called "adult-onset" because kids just didn't get it.

"When this disease we used to only see in adults started happening in adolescents, it was just shocking to people," Albright says. "Pediatricians just didn't know what to do."
Healthy living
Doctors already knew that adults who develop type 2 diabetes tend to be overweight or obese. (Scientists can't yet explain why.) And as kids have become increasingly overweight, the disease has started appearing at younger and younger ages.

In the United States, two out of three adults are now overweight, according to the CDC. Nineteen percent of kids between the ages of 6 and 11 are overweight, compared with 7 percent just 20 years ago. Over the same period, the proportion of overweight teens rose from 5 percent to 17 percent.

(You can find out whether you are overweight by plugging numbers into a calculator at an online site. Also, see the sidebar "Understanding Body Mass Index" at the bottom of this article.)

Like their type 1 peers, type 2 diabetics have to monitor blood sugar levels. But they often rely on drugs instead of insulin shots. Frequently, they can get the disease under control by simply exercising more and eating reasonable portions of healthy foods.

"We now know that we can prevent or postpone type 2 diabetes by having [adults] at very high risk lose 5 to 7 percent of their body weight," Albright says.

Scientists don't yet know whether the same is true for overweight kids. The trend is so new that CDC researchers are still working to gather basic information about how the disease works in young people.

But it can't hurt to play soccer instead of video games, and to choose fruits and vegetables over junk food.

"There's no harm in having healthier lifestyle habits," Albright says. "Get to know what's going into your body. Make it fun."
Seeking answers
Weighing more than you should doesn't mean you're doomed to develop diabetes. The disease is far more complex than that. And while research has come a long way, plenty of questions remain.

Doctors don't know, for example, why certain ethnic groups have particularly high rates of diabetes, including American Indians, Hispanics and African Americans. Nor can doctors say for sure why the chances of getting diabetes go up if your parents or siblings have it.

Both relationships suggest that genes play a role in setting people up for diabetes. But something in the environment has to push those genes into action, and scientists aren't sure what those triggers are. It's also not clear which genes are involved.

"People spend their whole careers trying to understand this stuff," Albright says.

If you learn you have diabetes, don't despair. There's plenty you can do to live a long and healthy life. Also, know you're not alone.

Reed encourages all newly diagnosed kids to go to one of the nation's many diabetes camps. It can be hugely reassuring, she says, to be surrounded by other kids who feel like you do.

"It's really amazing," Reed says. "It's a very supportive and tolerating environment for kids who are often the only ones at their school with diabetes. At diabetes camp, everyone is going through it together."
Going Deeper:

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When she was 9 years old, Ann Albright went to the doctor with odd flulike symptoms. She was exhausted. She had to go to the bathroom frequently in the middle

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Several articles about different diseases children can get.

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DOGO News - Kids news articles search results for diseases! Kids current events; plus kids news on science, sports, and more!

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Read our kids news articles on diseases.