Overview
Diabetes Mellitus is a disease in which the pancreas produces little or no insulin, a hormone that helps the bodys tissues absorb glucose (sugar) so it can be used as a source of energy. The condition may also develop if muscle, fat, and liver cells respond poorly to insulin. In people with Diabetes, glucose levels build up in the blood and urine, causing excessive urination, thirst, hunger, and problems with fat and protein metabolism. Diabetes mellitus differs from the less common Diabetes insipidus, which is caused by lack of the hormone vasopressin that controls the amount of urine secreted.
Diabetes is most common in adults over 45 years of age; in people who are overweight or physically inactive; in individuals who have an immediate family member with Diabetes; and in people of African, Hispanic, and Native American descent. The highest rate of Diabetes in the world occurs in Native Americans. More women than men have been diagnosed with the disease.
Key Information
There are two types of Diabetes.In type 1 Diabetes, which usually starts in childhood, the pancreas stops making insulin altogether. It is also called insulin-dependent Diabetes. In type 2 Diabetes, which starts in adulthood (and in some teenagers) the body still makes some insulin. But it doesn't make enough insulin, or the body can't use it properly. It is also called non-insulin-dependent Diabetes.
Diabetes is detected by measuring the amount of glucose in the blood after an individual has fasted (abstained from food) for about eight hours. In some cases, physicians diagnose Diabetes by administering an oral glucose tolerance test, which measures glucose levels before and after a specific amount of sugar has been ingested. Another test being developed for Type 1 Diabetes looks for specific antibodies (proteins of the immune system that attack foreign substances) present only in persons with Diabetes. This test may detect Type 1 Diabetes at an early stage, reducing the risk of complications from the disease.
What You Need to Know
Once Diabetes is diagnosed, treatment consists of controlling the amount of glucose in the blood and preventing complications. Depending on the type of Diabetes, this can be accomplished through regular physical exercise, a carefully controlled diet, and medication.
Individuals with Type 1 Diabetes require insulin injections, often two to four times a day, to provide the body with the insulin it does not produce. The amount of insulin needed varies from person to person and may be influenced by factors such as a persons level of physical activity, diet, and the presence of other health disorders. Typically, individuals with Type 1 Diabetes use a meter several times a day to measure the level of glucose in a drop of their blood obtained by pricking a fingertip. They can then adjust the amount of insulin injected, physical exercise, or food intake to maintain the blood sugar at a normal level. People with Type 1 Diabetes must carefully control their diets by distributing meals and snacks throughout the day so as not to overwhelm the ability of the insulin supply to help cells absorb glucose. They also need to eat foods that contain complex sugars, which break down slowly and cause a slower rise in blood sugar levels.
For persons with Type 2 Diabetes, treatment begins with diet control, exercise, and weight reduction, although over time this treatment may not be adequate. People with Type 2 Diabetes typically work with nutritionists to formulate a diet plan that regulates blood sugar levels so that they do not rise too swiftly after a meal. A recommended meal is usually low in fat (30 percent or less of total calories), provides moderate protein (10 to 20 percent of total calories), and contains a variety of carbohydrates, such as beans, vegetables, and grains. Regular exercise helps body cells absorb glucoseeven ten minutes of exercise a day can be effective. Diet control and exercise may also play a role in weight reduction, which appears to partially reverse the bodys inability to use insulin
Frequently Asked Questions
❓ What is diabetes and how is it managed?
Diabetes is a chronic condition where the body cannot regulate blood sugar properly. Management involves a combination of medication, healthy eating, regular physical activity, and blood sugar monitoring. Type 1 requires insulin therapy, while Type 2 can often be managed with lifestyle changes plus oral medications or insulin.
❓ Can lifestyle changes reverse Type 2 diabetes?
For many people, significant weight loss, a low-carbohydrate diet, and regular exercise can put Type 2 diabetes into remission - meaning blood sugar returns to normal without medication. This is not a cure, but sustained lifestyle change can dramatically improve outcomes and delay complications.
❓ What foods should people with diabetes limit?
People with diabetes benefit from limiting refined sugars, white bread, sugary drinks, processed foods, and high-glycaemic-index carbohydrates. Focus instead on non-starchy vegetables, lean proteins, whole grains, legumes, and healthy fats. Portion control and consistent meal timing are equally important.
❓ How often should blood sugar be checked?
Frequency depends on type and treatment. Those on insulin may check 4-10 times daily. Those managing with diet or oral medication might check once or twice daily, or less. A continuous glucose monitor (CGM) provides real-time data without finger-prick testing. Always follow your healthcare provider's guidance.
❓ When should someone see a doctor about diabetes?
See a doctor if you experience unexplained thirst, frequent urination, unexplained weight loss, blurred vision, slow-healing wounds, or persistent fatigue. Those already diagnosed should have check-ups every 3-6 months for HbA1c, blood pressure, kidney function, eye exams, and foot checks.