A growing problem in the United States, diabetes is particularly prevalent among Hispanic and other minority populations.
As reported by the US Centers for Disease Control and Prevention (CDC), about 9.8% of Hispanics are afflicted with diabetes. Hispanics are almost twice as likely as non-Hispanic whites to develop diabetes.
Some of the possible reasons cited by the CDC for this difference include:
|access to quality health care|
|social and cultural factors|
Diabetes is a life-long disease marked by high levels of sugar in the blood. It can be caused by too little insulin (a hormone produced by the pancreas to regulate blood sugar), resistance to insulin, or both.
Diabetes Causes, incidence, and risk factors
To understand diabetes, it is important to first understand the normal process of food metabolism. Several things happen when food is digested:
People with diabetes have high blood glucose. This is because their pancreas does not make enough insulin or their muscle, fat, and liver cells do not respond to insulin normally, or both.
There are three major types of diabetes:
Diabetes affects about 17 million Americans. There are many risk factors for diabetes, including:
The American Diabetes Association recommends that all adults be screened for diabetes at least every three years. A person at high risk should be screened more often.
High blood levels of glucose can cause several problems, including frequent urination, excessive thirst, hunger, fatigue, weight loss, and blurry vision. However, because type 2 diabetes develops slowly, some people with high blood sugar experience no symptoms at all.
Symptoms of type 1 diabetes:
Symptoms of type 2 diabetes:
Diabetes Signs and tests
A urine analysis may be used to look for glucose and ketones from the breakdown of fat. However, a urine test alone does not diagnose diabetes. The following blood glucose tests are used to diagnose diabetes:
Patients with type 1 diabetes usually develop symptoms over a short period of time, and the condition is often diagnosed in an emergency setting. In addition to having high glucose levels, acutely ill type 1 diabetics have high levels of ketones.
Ketones are produced by the breakdown of fat and muscle, and they are toxic at high levels. Ketones in the blood cause a condition called "acidosis" (low blood pH). Urine testing detects both glucose and ketones in the urine. Blood glucose levels are also high.
There is no cure for diabetes. The immediate goals are to stabilize your blood sugar and eliminate the symptoms of high blood sugar. The long-term goals of treatment are to prolong life, relieve symptoms, and prevent long-term complications such as heart disease and kidney failure.
Learn These Skills
Basic diabetes management skills will help prevent the need for emergency care. These skills include:
After you learn the basics of diabetes care, learn how the disease can cause long-term health problems and the best ways to prevent these problems. People with diabetes need to review and update their knowledge, because new research and improved ways to treat diabetes are constantly being developed.
What to Eat
You should work closely with your health care provider to learn how much fat, protein, and carbohydrates you need in your diet. Your specific meal plans need to be tailored to your food habits and preferences. People with type 1 diabetes should eat at about the same times each day and try to be consistent with the types of food they choose. This helps to prevent blood sugars from becoming extremely high or low. Type 2 diabetics should follow a well-balanced and low-fat diet.
A registered dietician can be very helpful in planning dietary needs.
Weight management is important to achieving control of diabetes. Some people with type 2 diabetes can stop medications after losing excess weight, although the diabetes is still present.
How to Take Insulin or Oral Medication
Medications to treat diabetes include insulin and glucose-lowering pills, called oral hypoglycemic agents. The bodies of people with type 1 diabetes cannot make their own insulin, so daily insulin injections are required. The bodies of people with type 2 diabetes make insulin but cannot use it effectively.
Insulin is not available in oral form. It is delivered by injections that are generally required one to four times per day. Some people use an insulin pump, which is worn at all times and delivers a steady flow of insulin throughout the day.
Insulin preparations differ in how quickly they start to work and how long they remain active. Sometimes different types of insulin are mixed together in a single injection. The types of insulin to use, the doses required, and the number of daily injections are chosen by a health care professional trained to provide diabetes care.
People who need insulin are taught to give themselves injections by their health care providers or diabetes educators.
Unlike type 1 diabetes, type 2 diabetes may respond to treatment with exercise, diet, and/or oral medications. There are several oral hypoglycemic agents that lower blood glucose in type 2 diabetes. They fall into one of three groups:
Most type 2 diabetics will require more than one medication for good blood sugar control within three years of starting their first medication. Different groups of oral medications may be combined, or insulin and oral medications may be used together.
Some people with type 2 diabetes find they no longer need medication if they lose weight and increase activity, because when their ideal weight is reached, their own insulin and a careful diet can control their blood glucose levels.
Oral hypoglycemic agents are not known to be safe for use in pregnancy; women who have type 2 diabetes and take these medications may be switched to insulin during pregnancy and while breast-feeding.
Gestational diabetes is treated with diet and insulin.
Self-monitoring of blood glucose is done by checking the glucose content of a drop of blood. Regular testing tells you how well diet, medication, and exercise are working together to control your diabetes.
The results of the test can be used to adjust meals, activity, or medications to keep blood sugar levels in an appropriate range. Testing provides valuable information for the health care provider and identifies high and low blood sugar levels before serious problems develop.
The American Diabetes Association recommends that premeal blood sugar levels fall in the range of 80 to 120 mg/dL and bedtime blood levels fall in the range of 100 to 140 mg/dL. Your doctor may adjust this depending on your circumstances.
You should also ask your doctor how often to check your hemoglobin A1c (HbA1c) level. The HbA1c is a measure of average blood glucose during the previous two to three months. It is a very helpful way to monitor a patient's overall response to diabetes treatment over time. A person without diabetes has an HbA1c around 5%. People with diabetes should try to keep it below 7%.
Ketone testing is another test that is used in type 1 diabetes. Ketones build up in the blood when there is not enough insulin in people with type 1diabetes, eventually "spilling over" into the urine. The ketone test is done on a urine sample. High levels of blood ketones may result in a serious condition called ketoacidosis. Ketone testing is usually done at the following times:
Excercise for Diabetes
Regular exercise is especially important for people with diabetes. It helps with blood sugar control, weight loss, and high blood pressure. People with diabetes who exercise are less likely to experience a heart attack or stroke than diabetics who do not exercise regularly. You should be evaluated by your physician before starting an exercise program.
Here are some exercise considerations:
Changes in exercise intensity or duration may require changes in diet or medication dose to keep blood sugar levels from going too high or low.
Diabetes: Foot Care
People with diabetes are prone to foot problems because of the likelihood of damage to blood vessels and nerves and a decreased ability to fight infection. Problems with blood flow and damage to nerves may cause an injury to the foot to go unnoticed until infection develops. Death of skin and other tissue can occur.
If left untreated, the affected foot may need to be amputated. Diabetes is the most common condition leading to amputations.
To prevent injury to the feet, people with diabetes should adopt a daily routine of checking and caring for the feet as follows:
For additional information, see diabetic resources.
Diabetes Expectations (prognosis)
The risks of long-term complications from diabetes can be reduced.
The Diabetes Control and Complications Trial (DCCT) studied the effects of tight blood sugar control on complications in type 1 diabetes. Patients treated for tight blood glucose control had an average HbA1c of approximately 7%, while patients treated less aggressively had an average HbA1c of about 9%. At the end of the study, the tight blood glucose group had dramatically fewer cases of kidney disease, eye disease, and nervous system disease than the less-aggressively treated patients.
In the United Kingdom Prospective Diabetes Study (UKPDS), researchers followed nearly 4,000 people with type 2 diabetes for 10 years. The study monitored how tight control of blood glucose (HbA1c of 7% or less) and blood pressure (less than 144 over less than 82) could protect a person from the long-term complications of diabetes.
This study found dramatically lower rates of kidney, eye, and nervous system complications in patients with tight control of blood glucose. In addition, there was a significant drop in all diabetes-related deaths, including lower risks of heart attack and stroke. Tight control of blood pressure was also found to lower the risks of heart disease and stroke.
The results of the DCCT and the UKPDS dramatically demonstrate that good blood glucose and blood pressure control, many of the complications of diabetes can be prevented.
Emergency complications include diabetic hyperglycemic hyperosmolar coma..
Long-term complications include:
Calling your health care provider
Go to the emergency room or call the local emergency number (such as 911) if symptoms of ketoacidosis occur:
Go to the emergency room or call the local emergency number if symptoms of extremely low blood sugar (hypoglycemic coma or severe insulin reaction) occur:
Maintaining an ideal body weight and an active lifestyle may prevent the onset of type 2 diabetes. Currently there is no way to prevent type 1 diabetes.
Endocrine glands release hormones (chemical messengers) into the bloodstream to be transported to various organs and tissues throughout the body. For instance, the pancreas secretes insulin, which allows the body to regulate levels of sugar in the blood. The thyroid gets instructions from the pituitary to secrete hormones which determine the pace of chemical activity in the body (the more hormone in the bloodstream, the faster the chemical activity; the less hormone, the slower the activity).
The pancreas is located behind the liver and is where the hormone insulin is produced. Insulin is used by the body to store and utilize glucose.
A person with diabetes constantly manages their blood's sugar (glucose) levels. After a blood sample is taken and tested, it is determined whether the glucose levels are low or high. If glucose levels are too low carbohydrates are ingested. If glucose in the blood is too high, the appropriate amount of insulin is administered into the body such as through an insulin pump.
[Article from the MedLine Plus Medical Encyclopedia of the US National Library of Medicine and the National Institutes of Health.]
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