Type II Diabetes

Type 2 diabetes mellitus is a metabolic disorder that results in hyperglycaemia (high blood glucose levels) due to the body:

  • Being ineffective at using the insulin it has produced; also known as insulin resistance and/or

  • Being unable to produce enough insulin

 

Type 2 diabetes is characterised by the body being unable to metabolise glucose (a simple sugar). This leads to high levels of blood glucose which over time may damage the organs of the body.

From this, it can be understood that for someone with diabetes something that is food for ordinary people can become a sort of metabolic poison.

This is why people with diabetes are advised to avoid sources of dietary sugar.

 

The good news is for very many people with type 2 diabetes this is all they have to do to stay well. If you can keep your blood sugar lower by avoiding dietary sugar, likely you will never need long-term medication.

Type 2 diabetes was formerly known as non-insulin-dependent or adult-onset diabetes due to its occurrence mainly in people over 40. However, type 2 diabetes is now becoming more common in young adults, teens and children and accounts for roughly 90% of all diabetes cases worldwide.

How serious is type 2 diabetes?

Type 2 diabetes is a serious medical condition that often requires the use of anti-diabetic medication, or insulin to keep blood sugar levels under control. However, the development of type 2 diabetes and its side effects (complications) can be prevented if detected and treated at an early stage.

In recent years, it has become apparent that many people with type 2 diabetes are able to reverse diabetes  through methods including low-carb diets, very-low-calorie diets and exercise.

For guidance on healthy eating to improve blood glucose levels and weight and to fight back against insulin resistance, contact me.

 

Following prediabetes  or metabolic disorder, type 2 diabetes can potentially be avoided through diet and exercise.

 

What causes type 2 diabetes?

Type 2 diabetes occurs when the hormone insulin is not used effectively by the cells in your body. Insulin is needed for cells to take in glucose (sugar) from the bloodstream and convert it into energy.

Ineffective use of insulin results in the body becoming resistant to insulin - also known as insulin resistance, which in turn causes blood sugar levels to rise (hyperglycaemia).

In advanced stages, type 2 diabetes may cause damage to insulin producing cells in the pancreas, leading to insufficient insulin production for your body's needs.

 

Type 2 diabetes risk factors

A number of factors can increase the risk of developing type 2 diabetes.  These include:

  • Being overweight or obese

  • Having a waist size of 80cm or more (women) or more than 94cm (men)

  • Eating an unhealthy diet

  • Physical inactivity

  • Having a first-degree relative with type 2 diabetes

  • Having high blood pressure or raised cholesterol levels

  • Being of South Asian and African-Caribbean descent

  • Smoking

 

The likelihood of developing type 2 diabetes is also influenced by genetics and environmental factors. For example, research shows that:

  • If either parent has type 2 diabetes, the risk of inheritance of type 2 diabetes is 15% 

  • If both parents have type 2 diabetes, the risk of inheritance is 75% 

Is there an age where I'm more at risk of type 2?

Type 2 diabetes used to be known as adult-onset diabetes as it was primarily seen in middle-aged adults over the age of 40.

However, in recent years, cases of type 2 diabetes have become more common in young adults, teens and children. This increase has been connected to climbing levels of obesity.

 

 

See our guide on diabetes risk factors  for more information.

 

Symptoms and diagnosis

The most common symptoms of type 2 diabetes are:

  • Excessive thirst

  • Frequent urination

  • Increased hunger

  • Extreme tiredness

  • Sudden loss of muscle mass

 

Some of these symptoms are the same for type 1 diabetes, but in type 2 diabetes they tend to develop more slowly over a period of months or years, making it harder sometimes for people to recognise them as signs of an underlying illness.

In fact, many people have type 2 diabetes for a long period of time before being diagnosed with the disease.

Type 2 diabetes is frequently diagnosed following the results of either a fasting plasma glucose test or an oral glucose tolerance test. The condition can also be detected through a general health check with your GP.  The condition can be detected through diabetes screening or may be picked up as part of other health checks.

 

Type 2 diabetes treatment

First line treatment for type 2 diabetes typically includes a combination of diet modification with regular and appropriate exercise.

The NICE guidelines (NG28) state that treatment for type 2 diabetes should take an individual’s needs and preferences into account. People with diabetes should be given the opportunity to make informed decisions about their care and work together with healthcare professionals.

The NICE guidelines encourage having high-fibre, low-glycaemic-index (low-GI) carbohydrate in the diet. This allows a good amount of flexibility and it is possible to follow a range of diets, including lower-carb and low-calorie, whilst ensuring you get a good source of low-GI foods such as vegetables, beans and pulses.

Your health team should help you with setting recommendations for carbohydrate and alcohol intake that works for you.

Low carb

Adopting a lower-carb diet can help with weight loss and lowering of blood glucose levels. This is because metabolised carbohydrate turns into glucose in the bloodstream and has an impact on blood sugar.

Low calorie

Meanwhile, a 2011 Newcastle University study, known as the Newcastle diet, examined the benefits of a low-calorie diet. This involved reducing food intake to 600 calories per day for 8 weeks. After 3 months, 7 of the 11 people studied were free of type 2 diabetes.

Blood glucose testing

People with type 2 diabetes can benefit greatly from testing their blood sugar levels as this provides immediate feedback on how food, lifestyle and illness affects blood glucose levels. Regular, structured blood glucose testing (also known as self-monitoring of blood glucose or SMBG) has been shown to improve long-term diabetes control by reducing HbA1c and the risk of complications.

Medication

People with type 2 diabetes may also be prescribed tablets and/or injectable medication. Metformin is one of the most commonly prescribed drugs for people with type 2 diabetes and helps the body to better respond to insulin.

Other drug treatments are also available, including:  Byetta (Exenatide), Victoza, Bydureon (Exenatide)

 

Some people with type 2 diabetes, usually those who have had type 2 diabetes for a number of years, may also be moved onto insulin injections.  Maintaining good control of blood glucose levels, as well as blood pressure and cholesterol levels, is vital in reducing the risk of diabetic complications. If you are overweight, weight loss can often help to lessen the extent of diabetes symptoms.

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