Type 2 is the most common form of diabetes, affecting 85-90% of all people with diabetes. While it usually affects older adults, more and more younger people, even children, are getting type 2 diabetes.
In type 2 diabetes, the pancreas makes some insulin but it is not produced in the amount your body needs and it does not work effectively.
Type 2 diabetes results from a combination of genetic and environmental factors. Although there is a strong genetic predisposition, the risk is greatly increased when associated with lifestyle factors such as high blood pressure, overweight or obesity, insufficient physical activity, poor diet and the classic ‘apple shape’ body where extra weight is carried around the waist.
Type 2 diabetes can often initially be managed with healthy eating and regular physical activity. However, over time most people with type 2 diabetes will also need tablets and many will also need insulin. It is important to note that this is just the natural progression of the disease, and taking tablets or insulin as soon as they are required can result in fewer complications in the long-term.
There is currently no cure for type 2 diabetes.
Cause of Type 2 Diabetes
While there is no single cause of type 2 diabetes, there are well-established risk factors. Some of these can be changed and some cannot.
You are at a higher risk of getting type 2 diabetes if you:
- have a family history of diabetes
- are older (over 55 years of age ) - the risk increases as we age
- are over 45 years of age and are overweight
- are over 45 years of age and have high blood pressure
- are over 35 years of age and are from an Aboriginal or Torres Strait Islander background
- are over 35 years of age and are from Pacific Island, Indian subcontinent or Chinese cultural background
- are a woman who has given birth to a child over 4.5 kgs (9 lbs), or had gestational diabetes when pregnant, or had a condition known as Polycystic Ovarian Syndrome.
Symptoms of Type 2 Diabetes
In type 2 diabetes, many people have no symptoms at all, while other signs are dismissed as a part of ‘getting older’. By the time type 2 diabetes is diagnosed, the complications of diabetes may already be present. Symptoms include:
- Being excessively thirsty
- Passing more urine
- Feeling tired and lethargic
- Always feeling hungry
- Having cuts that heal slowly
- Itching, skin infections
- Blurred vision
- Gradually putting on weight
- Mood swings
- Headaches
- Feeling dizzy
- Leg cramps.
Preventing Type 2 Diabetes
It is estimated that up to 60% of type 2 diabetes can be prevented. People at risk of type 2 diabetes can delay and even prevent this disease by following a healthy lifestyle. This includes:
- Maintaining a healthy weight
- Regular physical activity
- Making healthy food choices
- Managing blood pressure
- Managing cholesterol levels
- Not smoking.
Managing Type 2 Diabetes
Type 2 diabetes can sometimes initially be managed through lifestyle modification including a healthy diet and regular exercise. However, as the disease progresses, people with type 2 diabetes are often prescribed tablets to control their blood glucose levels. These tablets are intended to be used in conjunction with healthy eating and regular physical activity, not as a substitute. Diabetes tablets are not an oral form of insulin and they require insulin to be present in the body to be effective.
Eventually it may be necessary to start taking insulin to control blood glucose levels, when your body is no longer producing enough insulin of its own. Sometimes tablets may be continued in addition to insulin.
The aim of diabetes management is to keep blood glucose levels as close to ‘normal' as possible, that is between 4 to 6 mmol/L (fasting), as this will help prevent both short-term and long-term complications.
Regular blood glucose monitoring is necessary to see if the treatment being followed is adequately controlling blood glucose levels.
No matter which medication or management plan your doctor prescribes, make sure you follow their instructions. The pattern and frequency will depend on the individual, the tables and your circumstances.
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