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What is Diabetes? Comprehensive explanation of causes, symptoms, tests and treatment

Diabetes is "a disease that causes chronically high blood glucose levels. If left untreated, it can damage blood vessels and nerves and cause various complications. Our clinic offers comprehensive support for blood glucose control and lifestyle improvement by providing internal medicine, diabetology, and rehabilitation medicine.

Table of Contents

Types of Diabetes

Causes of Diabetes

Initial symptoms and symptoms at the time of progression

Diagnosis of Diabetes Mellitus

Treatment Basics

Three major complications of diabetes

What we can do to prevent complications

Types of Diabetes

1. type 1 diabetes

In this type, the beta cells of the pancreas are destroyed by autoimmunity, resulting in little or no insulin production. It is most common in young people, and insulin therapy is essential.

2. type 2 diabetes

It is the most common type of diabetes, accounting for about 90% of all diabetes cases among Japanese people. It is caused by lifestyle factors (diet, lack of exercise, obesity) and heredity, and is associated with poor insulin effectiveness.

3. gestational diabetes mellitus

It is an abnormality of glucose metabolism that is first detected during pregnancy. Specialist management is important to reduce the risk of maternal and fetal complications.

Causes of Diabetes

Diabetes is caused by a combination of the following factors

Genetic background

Eating and drinking too much

Lack of exercise

Accumulation of visceral fat

Stress

Hormonal fluctuations such as pregnancy and steroid treatment

In particular, Japanese people have a genetic characteristic of "weak insulin production," and are prone to developing the disease triggered by lifestyle habits.

Initial symptoms and symptoms at the time of progression

Symptoms that may be seen in the early stages

I'm thirsty.

Increased frequency of urination

...Tired easily

Weight loss

Itchy skin

*The disease is often asymptomatic in the early stages and is increasingly being found during physical examinations.

Symptoms seen during progression

Blurred vision

Numbness in hands and feet

Wounds do not heal well.

Swelling

Palpitations, shortness of breath

By the time symptoms appear, complications may have begun.

Diagnosis of Diabetes Mellitus

Diabetes is diagnosed by the following tests

1. blood test

Fasting blood glucose
HbA1c (average blood glucose over the past month or two)
Blood sugar at any time

2. urinalysis

urinary sugar
Urine protein (important for early detection of nephropathy)

3. additional inspections

Blood insulin and C-peptide
Anti-GAD antibody (type 1 discrimination)
Glucose tolerance test (OGTT)

fasting blood sugar: 126 mg/dL or higher

  • 75g glucose tolerance test 2-hour value200 mg/dL or higher
  • blood sugar level at any time200 mg/dL or higher
  • HbA1c6.5% or higher

The diagnosis is made after one of these criteria is met and reexamination and symptoms are confirmed.

Basis of treatment (diet, exercise, drug therapy)

The three pillars of diabetes treatment are diet, exercise, and medication.

1. diet

It reduces visceral fat by adjusting the diet to reduce the risk of raising blood glucose levels.

Adjustment of staple food (white rice → cereals, portion adjustment)
Eat a good amount of protein.
Vegetables are eaten first.
Review of snacking

2. exercise therapy

In collaboration with the rehabilitation department, the hospital recommends exercise that incorporates both muscle strength + aerobic exercise.

Squat
Walking
Core training
Stretch

3. drug therapy

If blood glucose control is required, a combination of the following is used

Oral medications (SGLT2 inhibitors, DPP-4 inhibitors, metformin, etc.)
GLP-1 receptor agonist
Insulin therapy

The treatment of diabetes mellitus isBlood sugar control and complication preventionis the objective.

Three major complications of diabetes

As diabetes persists, blood vessels and nerves may be damaged, leading to the following complications

Early detection and prevention are extremely important because they have a significant impact on quality of life.

1. diabetic retinopathy (the leading cause of blindness)

High blood sugar can damage the small blood vessels in the retina, resulting in vision loss, flying mosquitoes, and in the worst case, blindness.
An eye examination once or twice a year is recommended.

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2. diabetic nephropathy (the leading cause of dialysis)

The capillaries in the kidneys may be damaged, resulting in proteinuria → decreased renal function → progression to dialysis.
Regular checkups by blood and urine tests are important.

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3. diabetic neuropathy (cause of foot ulcer and gangrene)

Numbness, pain, and loss of sensation in the legs may occur and worsen without the injury being noticed.
Observation of the feet and assessment of blood flow can help prevent this.

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What we can do to prevent complications

We offer the following comprehensive support services to "prevent the progression" of diabetes and "improve the quality of life".

・Detailed blood tests (HbA1c, renal function, lipids, liver function)
Urinalysis (early detection of nephropathy)
Fundus examination and collaboration with ophthalmology department
Nerve and blood flow check of feet and legs
Evaluation of MASLD (fatty liver) comorbidity
Exercise and nutritional guidance
Tailor medications to the patient's lifestyle

We emphasize regular follow-up and provide medical care to prevent "complications that progress unnoticed.

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Diabetes Series - Related Article List

1. Know the basics of diabetes

2. Treatment and lifestyle modification

3. To prevent complications

4. Prevention and early intervention

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