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Type 1 diabetes is a disease in which the body does not make enough insulin to control blood sugar levels. Diabetes of type 1 was previously called insulin-dependent diabetes or diabetes juvenile.
During digestion, food is broken down into basic components. Carbohydrates are broken down into simple sugars, primarily glucose. Glucose is a critically important source of energy for the body's cells. To provide energy to the cells, glucose needs to leave the blood and get inside the cells.
Type 1 diabetes is not caused by the amount of sugar in a person's diet before the disease develops.
Type 1 diabetes is a chronic disease. It is diagnosed most commonly between ages 10 and 16. Type 1 diabetes equally affects males and females.
Type 1 diabetes is an autoimmune disease. This means it begins when the body's immune system attacks cells in the body. In type 1 diabetes, the immune system destroys insulin-producing cells (beta cells) in the pancreas.
Why the immune system attacks the beta cells remains a mystery. Some people are genetically predisposed to the disease. That does not mean they will necessarily get the disease. It just means that they are more likely to do so. Something in the environment, such as particular viral infections or something about the diet, may trigger this autoimmune disease in people with a genetic predisposition.
Insulin traveling in the blood signals the cells to take up glucose. Insulin is a hormone produced by the pancreas. When levels of glucose in the blood rise, like following a meal, the pancreas normally produces more insulin.
Type 1 diabetes occurs when some or all of the insulin-producing cells in the pancreas are destroyed. This leaves the patient with little or no insulin. Without insulin, sugar accumulates in the bloodstream rather than entering the cells. As a result, the body cannot use this glucose for energy. In addition, the high levels of glucose that remain in the blood cause excessive urination and dehydration, and damage tissues of the body.
Specific phobias are an overwhelming and unreasonable fear of objects or situations that pose little real danger but provoke anxiety and avoidance. Unlike the brief anxiety you may feel when giving a speech or taking a test, specific phobias are long lasting, cause intense physical and psychological reactions, and can affect your ability to function normally at work, at school or in social settings.
Specific phobias are among the most common anxiety disorders, and not all phobias need treatment. But if a specific phobia affects your daily life, several therapies are available that can help you work through and overcome your fears ? often permanently.
Red blood cells carry oxygen to all parts of your body. They also remove carbon dioxide (a waste product) from your body's cells and carry it to the lungs to be exhaled.
Red blood cells are made in your bone marrow?a sponge-like tissue inside the bones. White blood cells and platelets (PLATE-lets) also are made in your bone marrow. White blood cells help fight infection. Platelets stick together to seal small cuts or breaks on blood vessel walls and stop bleeding.
If you have PV, your bone marrow makes too many red blood cells. It also can make too many white blood cells and platelets.
A mutation, or change, in the body's JAK2 gene is the major cause of PV. This gene makes a protein that helps the body produce blood cells. What causes the change in the JAK2 gene isn't known. PV generally isn't inherited?that is, passed from parents to children through genes.
PV develops slowly and may not cause symptoms for years. The disease often is found during routine blood tests done for other reasons.
When signs and symptoms are present, they're the result of the thick blood that occurs with PV. This thickness slows the flow of oxygen-rich blood to all parts of your body. Without enough oxygen, many parts of your body won't work normally.
For example, slower blood flow deprives your arms, legs, lungs, and eyes of the oxygen they need. This can cause headaches, dizziness, itching, and vision problems, such as blurred or double vision.
Ovarian cancer is a type of cancer that begins in the ovaries. The female reproductive system contains two ovaries, one on each side of the uterus. The ovaries ? each about the size of an almond ? produce eggs (ova) as well as the hormones estrogen and progesterone.
Ovarian cancer often goes undetected until it has spread within the pelvis and abdomen. At this late stage, ovarian cancer is more difficult to treat. Early-stage ovarian cancer, in which the disease is confined to the ovary, is more likely to be treated successfully.
Ovarian cancer refers to any cancerous growth that begins in the ovary. This is the part of the female body that produces eggs.
Ovarian cancer is now the fifth most common cause of cancer-related death among females in the United States. That said, deaths from ovarian cancer have been falling in the U.S. over the past 2 decades, according to the American Cancer Society (ACS).
The ACS estimate that in 2019, around 22,530 people may receive a diagnosis of ovarian cancer. Around 13,980 people are likely to die from this condition.
Edema is swelling caused by excess fluid trapped in your body's tissues. Although edema can affect any part of your body, you may notice it more in your hands, arms, feet, ankles and legs.
Edema can be the result of medication, pregnancy or an underlying disease ? often congestive heart failure, kidney disease or cirrhosis of the liver.
Taking medication to remove excess fluid and reducing the amount of salt in your food often relieves edema. When edema is a sign of an underlying disease, the disease itself requires separate treatment. "Edema"is the medical term for swelling. Body parts swell from injury or inflammation. It can affect a small area or the entire body. Medications, pregnancy, infections, and many other medical problems can cause edema.
Edema happens when your small blood vessels leak fluid into nearby tissues. That extra fluid builds up, which makes the tissue swell. It can happen almost anywhere in the body. Edema is swelling that occurs when too much fluid becomes trapped in the tissues of the body, particularly the skin.
Peripheral edema. This usually affects the legs, feet, and ankles, but it can also happen in the arms. It could be a sign of problems with your circulatory system, lymph nodes, or kidneys.
Pedal edema. This happens when fluid gathers in your feet and lower legs. It?s more common if you?re older or pregnant. It can make it harder to move around in part because you may not have as much feeling in your feet.
Lymphedema. This swelling in the arms and legs is most often caused by damage to your lymph nodes, tissues that help filter germs and waste from your body. The damage may be the result of cancer treatments like surgery and radiation. The cancer itself can also block lymph nodes and lead to fluid buildup.
Pulmonary edema. When fluid collects in the air sacs in your lungs, you have pulmonary edema. That makes it hard for you to breathe, and it?s worse when you lie down. You may have a fast heartbeat, feel suffocated, and cough up a foamy spittle, sometimes with blood. If it happens suddenly, call 911.
Cerebral edema. This is a very serious condition in which fluid builds up in the brain. It can happen if you hit your head hard, if a blood vessel gets blocked or bursts, or you have a tumor or allergic reaction.
Macular edema. This happens when fluid builds up in a part of your eye called the macula, which is in the center of the retina, the light-sensitive tissue at the back of the eye. It happens when damaged blood vessels in the retina leak fluid into the area.
Angina is a type of chest pain caused by reduced blood flow to the heart. Angina (an-JIE-nuh or AN-juh-nuh) is a symptom of coronary artery disease.
Angina, also called angina pectoris, is often described as squeezing, pressure, heaviness, tightness or pain in your chest. Some people with angina symptoms say angina feels like a vise squeezing their chest or a heavy weight lying on their chest. Angina may be a new pain that needs to be checked by a doctor, or recurring pain that goes away with treatment.
Although angina is relatively common, it can still be hard to distinguish from other types of chest pain, such as the discomfort of indigestion. If you have unexplained chest pain, seek medical attention right away.
There are several types of angina.
Stable angina occurs when the heart is working harder than usual, for instance, during exercise. It has a regular pattern and can be predicted to happen over months or even years. Rest or medication relieves symptoms.
Unstable angina does not follow a regular pattern. It can occur when at rest and is considered less common and more serious because rest and medication do not relieve it. This version can signal a future heart attack within a short time ? hours or weeks.
Variant or Prinzmetal?s angina and microvascular angina are rare and can occur at rest without any underlying coronary artery disease. This angina is usually due to abnormal narrowing or relaxation of the blood vessels, reducing blood flow to the heart. It can be relieved by medicine.
