6 Early Signs You Have High Blood Sugar

High Blood Sugar

If you’re a diabetic, then you know that it’s important to keep your blood sugar levels under control.

But even if you’re not diabetic, it’s important to be aware of the early signs of high blood sugar.

So that you can get treatment and, hopefully, prevent the condition from getting worse.

In this blog post, we’ll discuss the early signs of high blood sugar and what you can do about them.

Keep reading for more information.

What exactly is high blood sugar?

According to the World Health Organization (WHO), high blood sugar is a condition in which: 

  • Fasting blood glucose above 7 mmol / L (126 mg / dL)
  • Blood glucose levels above 11 mmol / L (200 mg / dL) 2 hours after a meal

High blood sugar is medically known as hyperglycemia.

In addition to that, high blood sugar is very dangerous.

Why is it dangerous?

Because uncontrolled high blood sugar in people with diabetes (both type 1 and type 2) may result in:

  • Coma
  • Heart disease
  • Nerve damage
  • Problems with the eyes and feet and even cause amputations
  • Death

That’s why it is highly important to lower your blood sugar to normal levels in the range of 4-7 mmol / L (72-126 mg / dL).

Presently, many people are languishing in high blood sugar levels, which will jeopardize their health, placing them under the likelihood of developing diabetes, which is a life-threatening condition that can be very difficult to manage.

In fact, according to the CDC, there are millions of people that live with prediabetes who don’t know they have it.

To sum up: It is important to get your blood sugar levels in check. 

That said:

Let’s take a closer look at the six early symptoms of high blood sugar. 

Keep on reading…

Early signs you have high blood sugar

Of course, knowing the early signs of high blood sugar may enable you to keep your sugar levels in check.

First things first, I’m going to show you a list of the high blood sugar symptoms to give you an idea of the signs.

From there, I’ll explore each symptom in detail.

Early signs you have high blood sugar:

1. Frequent peeing

Frequent urination, also known as polyuria, is also an early sign of high blood sugar. 

But why is frequent peeing a symptom of high blood sugar?

Well, because of the excess glucose in your bloodstream, your kidneys react by flushing it out through the urine, which may result in frequent urination, mostly at midnight.


If you notice lately, you’re peeing a lot more often in larger amounts than normal. 

Then it’s important you see a doctor for a proper check-up.

Read on: Reasons for smelly urine (why my pee smells?).

2. Dry mouth and excessive thirst

One of the common first signs of high blood sugar is dry mouth and excessive thirst. 


That’s because your body is sending you a signal that it needs water to make up for the fluid you lose via frequent urination.

Thanks to your body removing excess sugar. 

This, in turn, makes you feel extremely thirsty all the time, not to be dehydrated

Think of it this way:

The more you wee-wee, the thirstier you are, the more you drink water, the more you wee-wee, and so onward.

In a nutshell: The higher your blood sugar, the more thirsty you’ll become.

3. Extreme fatigue (feeling tired all the time)

Extreme fatigue is another most common early sign of high blood sugar.


Because having high blood sugar levels may decrease your blood circulation and make you feel exhausted and sluggish all the time.

In fact, according to Diabetes.co.uk, many people with diabetes say they feel tired, lethargic, or fatigued at times.

The bottom line here: 

If you find yourself feeling tired all the time with no energy, especially if it’s accompanied by other symptoms like dehydration and frequent urination, it’s important to see your doctor.

4. Frequent headaches

Of course, having frequent headaches can be considered early signs of high blood sugar levels due to dehydration and extreme fatigue. 

However, other things can also trigger constant headaches such as stress, changes in weather, caffeine overuse, or lack of sleep, says HealthLine 

But, headaches due to high blood sugar are often severe and occur frequently.

For example, Diabetes Strong explains that high blood sugar headaches feel like: “your skull is cracking apart.”

HealthLine adds that the headaches may start mild in nature and worsen as your blood sugar increases.

In short, If you have frequent headaches, you should talk with your doctor.

Learn more about the cause of frequent headaches.

5. Blurred vision

Of course, blurred vision can be a sign of many different things. 

But high blood sugar can also cause blurred vision. 


According to experts, when there is excess sugar in your blood, it may affect your eyes because extra sugar with little water will get stuck in your eye lens, causing a swell up in your eye, which results in blurred vision.

In short, you should always report any vision changes to your doctor.

6. Slow healing of wounds

A slow-healing sore is another early symptom of high blood sugar.

According to the Mayo Clinic, slow healing of wounds, especially on the feet, is a common sign of high blood glucose levels.

It’s because your high blood sugar can also affect your body’s circulatory system.

To put it simply: blood can not flow to your sores to heal itself. 

Additional early signs…

High blood sugar additional early signs, including:


Lastly, if you think you have any of these symptoms. 

The most sensible thing to do is to consult your doctor for a thorough blood sugar test right away to determine your blood sugar level quickly.

… And if your indicators are really above the norm, follow your doctor’s advice concerning diet, exercise, and medication.

Signs You Have High Blood Sugar

Also read: How to Lower Blood Sugar Levels Fast (7 Easy Steps)