The number of people diagnosed with diabetes is on the rise around the world. Of the many types of diabetes, most people only know of type 1 and type 2. But what is the difference between the two, and why is it important to know?
Many think diabetes simply refers to an inability to regulate blood sugar, and while that is correct, there is much more to the condition that is important in order to understand the discrepancy. For instance, the age in which you develop the condition and the treatment required for each
condition is very different.
It is common for people to think diabetes is a single disease, but that is not the case. Although the symptom of both types of diabetes is having high blood sugar levels, there are different underlying problems.
In this article, you will understand the discrepancy between type 1 and type 2 diabetes, what the symptoms for each type are, and how the condition is diagnosed and treated. You will also be able to answer some of the most common questions surrounding the types of diabetes.
Defining Type 1 and Type 2 Diabetes
In order to explain the difference between the two types of diabetes, it is important to understand how the human body is supposed to regulate blood sugar.
After consuming food, specifically that which contains carbohydrates, your body breaks it down into glucose. Once this happens and there is an influx of glucose in your blood, your pancreas is supposed to secrete insulin to help move the glucose into the cells where it is needed.
As you can guess, the body of a person suffering from diabetes does not perform this step as outlined.
Type 1 diabetes means the body attacks the beta cells because it thinks they are the enemy and they are the ones who give out insulin. The body attacks and destroys them and in turn the body gets stuck with no insulin.
Type 2 diabetes is when the body also gives out insulin, but the cells become insulin-resistant. The body starts to struggle to make insulin due to elevated blood sugar levels.
Both Type 1 diabetes and Type 2 diabetes have elevated blood sugar, but they impact the body differently and develop differently.
Difference Between Type 1 and Type 2 Diabetes
The simplest way to understand the difference is to look at how each condition develops.
| Feature | Type 1 Diabetes | Type 2 Diabetes |
| Primary cause | Autoimmune destruction of insulin-producing cells | Insulin resistance with gradual decline in insulin production |
| Insulin production | Very little or none | Present initially, decreases over time |
| Typical age of onset | Often begins in childhood or early adulthood, but can occur at any age | More common in adults but increasingly seen in children and adolescents |
| Onset of symptoms | Usually develops quickly | Often develops gradually over several years |
| Body weight | Can occur at any body weight | More common in people who are overweight, but not exclusively |
| Insulin therapy | Required for survival | May or may not be required depending on disease progression |
| Prevention | No proven method to prevent | Risk may be reduced through healthy lifestyle habits, though genetics also play a role |
Although this comparison highlights the major differences, every individual is unique. Diagnosis should always be made by a qualified healthcare professional.
Type 1 vs Type 2 Diabetes: Symptoms Compared
Type 1 and Type 2 diabetes can both have some of the same symptoms. But, they can develop at different rates.
Type 1 Symptoms
Type 1 diabetes can develop in days and even weeks. Common symptoms are:
- Frequent Urination
- Thirsty
- Hunger
- Weight loss
- Fatigue
- Blink or Blurry vision
- Irritability
- Breath has a fruity odor
- Nausea
- Vomiting
Of these symptoms, a big potential indicator would be the fruity breath odor. This occurs when the body is going through ketoacidosis and is an emergency because the body produces no insulin.
Type 2 Symptoms
Type 2 diabetes is the slow onset of some of the previously mentioned symptoms. The key difference is that the symptoms in Type 2 diabetes can go unnoticed as they develop slowly.
Common Symptoms:
- Thirst
- Frequent Urination
- Fatigue
- Diminished Vision
- Slow Healing Cuts
- Frequent Infections
- Numbness in Hands and Feet
- Skin Darkening (Acanthosis Nigricans)
Type 2 diabetes is usually diagnosed when high blood sugar is found in a blood test, even if the patient does not show any typical symptoms.
Key Differences in Symptoms of Type 1 and Type 2 Diabetes
Here are some important differentiating symptoms for the two types of diabetes.
Type 1
Symptoms appear suddenly.
Losing weight when the appetite is increasing is common.
Diabetic ketoacidosis commonly occurs when a patient is first diagnosed.
Insulin deficiency occurs more rapidly.
Type 2
Symptoms develop gradually.
Many people are asymptomatic.
Losing weight in the early stages is rare.
Insulin deficiency occurs in the later stages and commonly is preceded by insulin resistance.
Understanding these differentiating symptoms can improve the timing for a patient seeking medical attention for a diagnosis and treatment.
Why Should Diabetes Be Diagnosed Early
Having diabetes should not ever be considered normal.
If diabetes is not treated, consistently high blood sugar can cause damage to blood vessels, nerves, and organs.
Diabetes can lead to many long-term problems such as:
- Heart Disease
- Stroke
- Kidney Disease
- Vision Loss
- Nerve Damage
- Foot Problems
- Infections
It is good to know that the early diagnosis of diabetes, along with good treatment and preventive measures, can improve the person's condition and make their life much better. There is no doubt diabetes can be difficult to manage, but if you learn the signs, you will be on the right path.
Differences in Causes of Type 1 and Type 2 Diabetes
Diabetes type 1 and type 2 raise blood sugar for different reasons.
Knowing these reasons assists in differentiating treatment for both conditions.
Reasons for Type 1 Diabetes
Diabetes type 1 is classified as an autoimmune disease. The immune system mistakes beta cells in the pancreas, which produce insulin, as an enemy and destroys them.
As these cells are eliminated, the pancreas loses its ability to produce enough insulin to manage blood sugar.
Researchers are unsure of the exact reason behind the autoimmune response. However, some reasons are thought to include:
- A change in environment (under research)
- Predisposed family genetics
- History of family members with autoimmune diseases
- Certain viral infections
- Again, thoughtful eating, being active, and other balanced healthy habits are not a reason for diabetes type 1.
At this time, type 1 diabetes cannot be prevented.
Reasons for Type 2 Diabetes
Type 2 diabetes follows a different path.
Initially, the pancreas produces insulin, however, the body's cells start to ignore insulin. This is referred to as insulin resistance.
The pancreas keeps making more insulin. Eventually, the pancreas cannot handle the body's demands and blood sugar levels rise.
Developing type 2 diabetes can be a result of many risks that can be as serious as genetics or as easy as an unhealthy diet. Here are some of those risks:
- Family history
- Excess body weight
- Physical inactivity
- Increasing age
- Previous gestational diabetes
- High blood pressure
- Polycystic ovary syndrome (PCOS)
- Certain ethnic backgrounds
- Unhealthy dietary patterns
Keeping healthy can decrease the risk of a lot of these factors. But some of these factors are inevitable and can still lead to the development of type 2 diabetes.
How Does a Test Differentiate Type 1 and Type 2 Diabetes?
People are often confused and question how a doctor differentiates between Type 1 and Type 2 Diabetes.
First, a doctor will commonly run a blood test to confirm that a patient is Diabetic. After that, there are a couple of tests that help answer the question of what type a patient may be.
The HbA1c Test
The HbA1c test measures blood glucose levels over the previous few months. If someone has an HbA1c level of 6.5% or higher, that is indicative of diabetes. While this test does confirm the disease, it does not determine what type a patient may have.
Fasting Plasma Glucose Test
Similar to the HbA1c test, the Fasting Plasma Glucose Test measures blood glucose after a patient has fasted for at least 8 hours. If blood glucose levels are still high, this is indicative of diabetes. This test is also non-determinative of what type.
The Oral Glucose Tolerance Test (OGTT)
The Oral Glucose Tolerance Test measures how well the body processes glucose after a patient has ingested a glucose solution. After that solution has been ingested, blood glucose levels are measured multiple times over the next couple of hours.
This test has multiple uses, such as detecting gestational diabetes, and is useful when other tests yield inconclusive results for diagnosing diabetes.
C-Peptide Test
The C-peptide test indicates how much insulin is produced by the pancreas.
Type 1 diabetics have low levels of C-peptide because there is little to no insulin production by the pancreas.
Patients who are diagnosed with type 2 diabetes have normal or increased levels of C-peptide in the early stages of the diabetes.
Autoantibody Testing
In other cases, when there is a suspicion of type 1 diabetes, blood tests are done to determine autoimmune markers.
Some of the antibodies include:
- GAD antibodies
- IA-2 antibodies
- Zinc transporter 8 (ZnT8) antibodies
- Insulin autoantibodies (most prevalent in children)
Having diabetes-related autoantibodies is highly indicative of type 1 diabetes.
Diabetes Mellitus Type 1 and Type 2: Key Differences at a Glance
Although both conditions belong to the broader group of diseases known as diabetes mellitus, they differ in several important ways.
| Comparison | Type 1 Diabetes | Type 2 Diabetes |
| Cause | Autoimmune destruction of beta cells | Insulin resistance with progressive beta-cell dysfunction |
| Insulin production | Very low or absent | Usually present initially |
| Onset | Often sudden | Usually gradual |
| Common age | Children, teenagers, young adults, but any age is possible | More common in adults, increasingly seen in younger people |
| Body weight | Any weight | Frequently associated with overweight or obesity, though not always |
| Initial treatment | Insulin therapy | Lifestyle changes, oral medicines, injectable medications, and sometimes insulin |
| Prevention | Not currently possible | Risk may be reduced through healthy lifestyle habits |
This comparison highlights why accurate diagnosis is essential. The treatments that work well for one type may not be appropriate for the other.
Treatment for Type 1 and Type 2 Diabetes
While there are some similarities between type 1 and type 2 diabetes in the management of the disease because both are chronic conditions, there are major differences in the way that they are treated.
Treatment for Type 1 Diabetes
Type 1 Diabetes is insulin dependent because there is a deficiency in insulin production.
Treatment usually includes:
- Insulin delivered by injection or via an insulin pump
- Continuous Glucose Monitoring or regular blood testing to check glucose levels
- Planned diet
- Exercise
- Education
The newest technologies such as Insulin pumps and Continuous Glucose Monitoring can be used to improve care for those with type 1 diabetes.
Treatment for Type 2 Diabetes
For the management of type 2 diabetes, therapies are highly individualized and can be modified as necessary.
Lifestyle changes are typically the primary focus of early management, such as the ones listed below.
- Eating a balanced diet, with an emphasis on vegetables, whole grains, lean proteins, and healthy fats.
- Reducing the consumption of sugary beverages and highly processed foods.
- Participating in regular exercise.
- Maintaining body weight in a healthy range as appropriate.
- Prioritizing sleep and rest and reducing stress.
If the previously mentioned measures aren't adequate, health care providers offer medications.
Common medications include:
- Metformin
- GLP-1 receptor agonists
- SGLT2 inhibitors
- DPP-4 inhibitors
- Sulfonylureas
- Insulin (as needed)
Medication is individualized based on the needs and goals of patients, and is influenced by blood sugar levels and other pertinent factors, such as heart and kidney health and disease.
Can Diabetes Be Prevented?
It depends on the type of Diabetes.
Type 1 Diabetes
There is no effective method for the prevention of type 1 diabetes at this time.
Studies of triggers for Type 1 Diabetes are currently focused on genetics and immunity.
Type 2 Diabetes
While type 2 diabetes cannot be completely prevented, it is possible to reduce the risk of its onset by adopting healthy lifestyle habits.
These include:
- Attaining and maintaining a healthy weight
- Regular physical activity
- A healthy diet
- No tobacco use
- Controlled blood pressure and cholesterol levels
- Routine health care appointments
It is important for those with a history of diabetes in the family, to discuss the matter with their doctor, and assess their individual risk.
Living Well With Diabetes
While the diagnosis of diabetes can be overwhelming, the good news is that you can live a healthy active life while efficiently managing your condition.
Long-term diabetes management involves many components, and some of these are listed below:
- Staying in touch with your doctor for any necessary appointments
- Consistent monitoring of your blood glucose levels
- Making sure to take any prescribed medication
- Implementing a nutritious diet
- Exercising on a regular basis
- Effective stress management
- Getting quality sleep
- Going for regular check-ups of your eyes, kidneys, and feet
Making small changes to your routine can have a significant impact on your health over time.
Frequently Asked Questions
Which is Worse, Type 1 or Type 2 Diabetes?
This is a commonly asked question and the answer is not straightforward.
Both Type 1 and Type 2 diabetes are serious conditions and can lead to the same complications if blood sugar levels are not managed.
Type 1 is when your body is unable to create insulin and therefore you are prescribed insulin for life. Your blood sugar can raise and be dangerous in this situation, in fact, you can prompt DKA (Diabetic Ketoacidosis) which is a medical emergency.
Type 2 can be damaging to the same organs as Type 1, but the elevated blood sugars are not as dangerous and can go unnoticed for years because of little to no symptoms until the damage has been done.
So, it is hard to say which condition is worse, but both are serious and can lead to complications if not managed for the rest of your life.
Can You Have Both Type 1 and Type 2 Diabetes?
This is a somewhat tricky question, but yes you can.
Some people with type 1 diabetes may also develop type 2 diabetes symptoms due to the development of insulin resistance, especially if they become overweight. This is sometimes described as “double diabetes”.
On the other hand, some patients with type 2 diabetes may actually have the slowly progressive autoimmune type of diabetes that is described as latent autoimmune diabetes in adults (LADA). This type of diabetes shares characteristics of both type 1 and type 2 diabetes.
To determine the best diagnosis and treatment plan for a patient with diabetes, clinical evaluations, blood work, and an extensive medical history are relied upon, especially since healthcare providers encounter various presentations of the disease.
Is Type 1 or Type 2 Diabetes More Serious?
It is critical that both types of diabetes are taken seriously.
With type 1 diabetes, there is a complete lack of insulin production, and therefore there is an immediate need for insulin replacement. In the short term, type 2 diabetes may be perceived as less critical due to the gradual onset of symptoms. In the long term, however, untreated type 2 diabetes can result in any one of the following:
cardiac disease, a cerebrovascular accident, renal failure, visual impairment, damage to the peripheral nerves, and foot ulcers.
With respect to the type of diabetes, the long-term prognosis is dependent on how well one controls blood glucose levels, blood pressure, and serum lipids.
How Do I Know If It's Type 1 or Type 2 Diabetes?
In some cases, there may be an overlap in the presentation of type 1 and type 2 diabetes, and therefore, it is not possible to determine the type of diabetes simply based on the presenting symptoms.
A few things that healthcare professionals look at are:
- How old you were at diagnosis
- How quickly your symptoms developed
- Your family history
- Your body weight
- Your medical history
- Your blood test results
Some extra lab tests can help tell the difference between Type 1 and Type 2 diabetes. These can also include C-peptide testing and some autoantibody tests.
If you have symptoms of intense thirst, frequent urination, heightened fatigue and blurred vision with the symptoms of sudden weight loss, it is suggested you go see a doctor.
Can Type 2 Diabetes Be Reversed?
Reversal isn't the best terminology as it can be a little tricky to understand. Most healthcare professionals don’t use the word "reversal" but instead use "remission."
Diabetes Type 2 can be brought into remission for some people if they:
- Lose excess weight where indicated,
- Follow a healthy meal plan,
- Become physically active,
- Take their medications,
- and Engage with their healthcare to develop a treatment and management plan.
Remission occurs when blood sugar levels return to the non-diabetic range, and no diabetes management medication is taken for a significant amount of time.
It is important to understand that diabetes Type 2 is not a permanent cure when in remission as blood sugar levels can increase again at any time.
There is no therapeutic management plan for Type 1 diabetes because it is an autoimmune disease that impacts the body’s ability to produce insulin.
Comparing Life Expectancy for Type 1 Diabetes and Type 2 Diabetes
There are so many factors that can affect life expectancy outside of the type of diabetes that is diagnosed that it is difficult to say who lives longer.
Things Included Are:
- Diagnosing Age
- Blood Glucose Regulation
- Blood Pressure Control
- Cholesterol Control
- Smoking
- Level of Activity
- Healthcare Access
- Consistent Medical Checkups
Diabetes care has improved during the last decade. Continuous glucose monitors, better insulin options, and new medications aimed at Type 2 diabetes have improved the long-term outlook for all diabetics significantly.
Well-managed Type 1 and Type 2 diabetics can live long, well, and full lives.
Can Adults Get Type 1 Diabetes?
Yes. Type 1 diabetes typically occurs in children and young people, but it can occur in adults, and because it is an autoimmune condition, adults can get it at any age.
Because of the age of the adult, autoimmune diabetes may be incorrectly diagnosed as Type 2 diabetes. More testing may be the answer when the diagnosis is uncertain.
Can Children Get Type 2 Diabetes?
Yes. The number of children and adolescents diagnosed with Type 2 diabetes is increasing every year.
Causes of the increasing prevalence of Type 2 diabetes in children include:
- Childhood Obesity
- Less Physical Activity
- A Family History of Diabetes
- Certain Ethnicities
Decreasing the risk of complications from diabetes is linked to early diagnosis and active lifestyle changes.
Is There a Family History of Diabetes?
There is some genetic link in both Type 1 and Type 2 diabetes. Gene and autoimmune connections exist for Type 1 and Type 2 diabetes have a stronger genetic link, but also lifestyle and environmental factors.
You may have a stronger risk of getting diabetes if you have family members with diabetes, but it is not likely you will get diabetes.
When Should You See a Doctor?
The earlier diabetes is diagnosed and treated, the lower the risk is of complications.
You should consider occupational health services when you have some of the symptoms of diabetes, such as:
- Frequent urination
- Excessive thirst
- Unexplained weight loss
- Persistent fatigue
- Blurred vision
- Slow-healing cuts or wounds
- Frequent infections
- Tingling or numbness in your hands or feet
If you have a family history of diabetes, you should still get checkups, even if you’re feeling fine.
Final Thoughts
Although both Type I and Type II diabetes result in high blood sugar, both are of different origins and require different treatments.
Diabetes Type I is in part caused by the body’s immune system attacking the pancreas, and thus, Insulin is required for the rest of a Type I victim’s life. Type II develops when the body resists Insulin and the pancreas then cannot make enough Insulin to keep blood sugar in check.
There is a great need to distinguish the treatments, as the earlier the diagnosis, the better the patient will get.
Both Type 1 and Type 2 require a balanced diet, regular exercise, and the regular support of healthcare workers, as well as the prescribed medications.
If you have any symptoms of diabetes, you should get treated as soon as possible to avoid the complications that you would otherwise face for the rest of your life.
