Living with Diabetes? Learn the Signs and Dangers of Hypoglycemia Unawareness

If you are a diabetic, you must be well aware of the importance of monitoring blood sugar levels. Sometimes you must have also experienced low blood sugar levels, a condition known as HYPOGLYCEMIA. Common signs are shaky feelings, sweating, and lightheadedness. Both high sugar levels (HYPERGLYCEMIA) and low blood sugar levels (HYPOGLYCEMIA) are equally dangerous. But often, hypoglycemia silently causes more harm. Its management becomes more challenging as people don’t realise its presence unless a severe episode occurs. 

In this blog, you will explore what hypoglycemia is and what its causes are, who is at more risk, and how you can protect yourself and your loved ones from its harmful effects. 

What Is Hypoglycemia Unawareness?

Hypoglycemia unawareness means a condition in which your body no longer gives you alarming signs when the blood sugar level drops from normal levels. Normally, when the blood sugar levels drop below 70mg/dL (3.9 mmol/L), the body releases a hormone called adrenaline, which gives symptoms like:

• Shaking or trembling
• Sweating
• Fast heartbeat
• Irritability or anxiety
• Sudden hunger

These symptoms are an indication of hypoglycemia and an alarm for you to check your blood sugar levels. However, in hypoglycemia unawareness, these signs disappear. And the problem remains unnoticeable until your blood sugar drops so low that your brain starts to malfunction, leading to confusion, slurred speech, fainting, and even seizures. 

Why Does Hypoglycemia Unawareness Happen?

HYPOGLYCEMIA UNAWARENESS is a life-threatening condition. But it never develops overnight, but rather occurs after repeated episodes of low blood sugar levels over time. After several episodes of low blood sugar levels, your brain and nervous system become desensitised and dull to the warning signs. 

Common causes of Hypoglycemia unawareness are: 

Tight glucose control: There are increased chances when the person has aggressive blood sugar targets (A1C<6.5%). 

Prolonged Insulin use: People who are on regular Insulin therapy, such as with Type 1 diabetes, experience this hypoglycemia unawareness more frequently. 

Autoimmune neuropathy: When the body’s immune system damages its nerves, the body’s ability to recognise hypoglycemia is lowered. 

Frequent episodes at Night: Frequent Hypoglycemia episodes happening during the night lower the body’s ability to sense this condition even during the day.

High Alcohol consumption: High alcohol consumption suppresses the release of glucose from the liver, and can mask the warning signs. 

Side effects of medicines: There are certain medicines whose regular intake reduces the physical symptoms of high blood sugar levels. 

Who Is Most at Risk?

People who are regularly using Insulin or blood sugar-lowering medication such as sulfonylureas are at high risk of developing hypoglycemia unawareness. 

• However, the condition is more common among the following: 
• People have had Type 1 diabetes for more than 5-10 years.
• Individuals having tight glucose control. 
• Patients with multiple episodes of hypoglycemia
• Old age individuals with autonomic neuropathy or cognitive decline 

According to the data of the American Diabetes Association (ADA), almost 20-25% of people with Type 1 diabetes and 10% with Type 2 diabetes experience some degree of hypoglycemia unawareness.

What Are the Hidden Dangers?

The major outcome of hypoglycemia unawareness is severe hypoglycemia, a condition in which the blood sugar level drops so low that medical help is needed to recover. 

Without any prior indications or warning signs, severe low blood sugar levels can happen suddenly and without any reason or cause. This can lead to:

• Sudden loss of consciousness or even seizures
• Accidents while driving or operating machinery 
• Hospitalization 
• Long-term cognitive effects from repeated episodes. 

Sudden severe hypoglycemia is a medical emergency, and if left untreated, it can lead to coma or even death. 

Recognising the Signs Even Without Symptoms

The best way to manage is to catch the signs of hypoglycemia even if the body is not giving any symptoms. This can be possible only by staying alert to subtle changes in the body and by using technology.

Signs that should not be ignored are:

• Unusual tiredness and irritability 
• Trouble concentrating 
• Slurred speech
• Blurry Vision 
• Unexpected mood changes
• Mentally confused and spaced out.

These signs can be easily noticed by the people around you, like your family, friends, and co-workers. So it's equally important to keep your social support network updated and educated on what to notice and how to manage an emergency.

How to Manage and Prevent Hypoglycemia Unawareness

The hopeful thing is that hypoglycemia unawareness is reversible and manageable. With time, patience, and vigilant monitoring, you can retrain your body to recognise low blood sugar levels again. Moreover, certain steps help in easy monitoring. 

1. Avoid Frequent lows

Consistently keeping your blood sugar at normal levels for several weeks can help restore your body’s normal response. 

Use Technology for healthcare benefits:

It's an era of technology, so use it for healthcare benefits. 

Continuous Glucose Monitoring (CGMs): These devices track your glucose levels 24/7 and alert you before your levels drop to normal. 

Smart Insulin Pumps: These are the pumps that automatically stop delivering insulin if the glucose level drops below normal.

Data sharing apps: These apps enable you to enter, store, and share data with loved ones, allowing them to monitor your glucose trends and receive real-time alerts. 

Practice the “Rule of 15”

Whenever the sugar level drops, treat it immediately.

*Always eat 15 grams of fast-acting carbohydrates (like glucose tablets, ½ cup juice, or regular soda).

Wait for 15 minutes and then recheck your glucose. 

Repeat the process if the levels are still below the normal.  

Always keep a quick source of glucose, and make sure your social circle knows about it. 

Lifestyle adjustments

There are certain lifestyle changes that are helpful in stabilising your blood sugar levels. Here they are:

• Eat consistent meals and snacks on time if using insulin. 
• Limit alcohol intake, especially on an empty stomach
• Exercise safely always after checking blood sugar levels. 
• Always manage stress as it directly affects the blood sugar levels. 

Inform Your Healthcare Team

It's always important to keep your healthcare team informed. They can help you to fine-tune your insulin doses, meal plans, and daily schedule.

Training is very important to know and recognize patterns of hypoglycemia.

Sometimes, keeping your glucose targets slightly higher can restore symptoms within a week. 

The Role of Continuous Glucose Monitoring (CGM)

Continuous Glucose monitoring is taking steps to prevent hypoglycemia. They measure interstitial glucose every few minutes and send alarms and alerts to your phone or smartwatch. They provide early morning warnings before the drop of glucose levels to too low. They also provide real-time trend data to predict the next lows. They also provide nighttime alerts for early detection of nocturnal hypoglycemia. According to studies, CGMs can lower the chances of hypoglycemia up to 50% in people with hypoglycemia unawareness. 

 Can Hypoglycemia Unawareness Be Reversed?

As per the research, avoiding hypoglycemia for 2-3 weeks can restore hormonal responses in many people. With regular glucose monitoring, appropriate medication adjustments, and training, many patients regain their early warning signs and reduce the risk of severe episodes.