Every cell in your body needs energy to function properly, and that energy primarily comes from glucose, or blood sugar. Glucose plays a crucial role in supporting digestion, heart health, brain function, vision, and skin. Throughout the day, blood sugar levels naturally fluctuate, but when they drop below 70 mg/dL, it results in low blood sugar, also known as hypoglycemia.
Recognizing the signs of low blood sugar is important for maintaining overall health. In this article, we’ll explore 12 key symptoms to watch for.
Unexpected Sweating: A Sign of Low Blood Sugar
Have you ever felt sweaty and clammy even when it wasn’t particularly hot? If you start sweating before lunch, it could be a sign of low blood sugar rather than a reaction to the temperature. According to the University of Michigan Health, hypoglycemia can trigger sweating, especially in individuals with diabetes. However, it can happen to anyone, as a drop in glucose levels prompts an adrenaline surge. In people with diabetes, hypoglycemia is also a common cause of night sweats.
Feeling Irritable: A Sign of Low Blood Sugar
We’ve all experienced it, you’re waiting for a late dinner companion, and as hunger sets in, so does irritation. According to gastroenterologists, there’s a scientific reason behind this “hangry” feeling. When blood sugar levels drop, stress hormones like cortisol and adrenaline surge, often leading to irritability. However, it’s important to note that hunger doesn’t always indicate low blood sugar, it’s possible to feel cranky even with stable glucose levels.
Feeling Hungry: A Key Sign of Low Blood Sugar
Blood sugar is the primary energy source for your cells, especially the brain. When blood sugar levels drop, your cells don’t receive the energy they need to function properly, triggering feelings of hunger.
To help stabilize blood sugar levels, it’s important to consume nutrient-rich foods such as non-starchy vegetables, whole grains, and healthy fats. According to Medical News Today, while starchy carbs and sugary drinks can provide a quick spike in blood sugar, the effect is short-lived and does not help maintain stable levels over time.
Nightmares: A Possible Sign of Low Blood Sugar
Hypoglycemia can cause more than just night sweats, it can also lead to restless sleep and intense nightmares. In fact, many people with diabetes report experiencing nightmares so vivid and distressing that they wake up from their sleep.
Since nighttime blood sugar drops are often overlooked or misdiagnosed, it’s important to pay attention if you frequently experience nightmares. If you suspect nocturnal hypoglycemia, consider discussing your pre-bedtime diet and exercise routine with your doctor.
Trouble Focusing: A Sign of Low Blood Sugar
If you find yourself struggling to concentrate, it might be a sign that your blood sugar is low and it’s time for a lunch break. Low blood sugar can deplete your brain’s supply of glucose, impairing your ability to focus and complete simple tasks. The combination of hunger and low energy further worsens this issue. This drop in focus doesn’t only affect adults, skipping meals can also significantly impact your children’s attention span and their ability to learn effectively.
Feeling Dizzy: A Potential Sign of Low Blood Sugar
If you feel lightheaded after skipping a snack, it could indicate that your blood sugar has dropped. Low glucose levels can trigger your sympathetic nervous system, which releases hormones that cause dizziness, hunger, and weakness. Dehydration can also exacerbate this feeling, so staying hydrated is key to avoiding dizziness.
However, dizziness can also be caused by other factors, such as inner ear problems. If eating doesn’t relieve the dizziness, it may be worth considering other potential causes and speaking with your doctor.
Feeling Shaky: A Sign of Low Blood Sugar
One of the common signs of low blood sugar is feeling shaky. When glucose levels drop, your body releases adrenaline to signal that you need to refuel. However, if you feel shaky after a meal, it could be a sign of idiopathic postprandial syndrome (IPS), which mimics symptoms of low blood sugar, including headaches and dizziness. While IPS usually doesn’t require treatment, it’s helpful to be aware of these signs so you can distinguish between the two conditions.
Change in Vision: A Sign of Low Blood Sugar
If things suddenly appear blurry, a drop in blood sugar could be the cause. Hypoglycemia, particularly in individuals with diabetes, can lead to visual symptoms like blurred vision, “black spots,” or even double vision. However, it’s not just low blood sugar that can affect your eyesight, high blood sugar can also cause lens swelling, impacting your vision. If you experience persistent changes in your vision, it’s important to consult with your doctor to rule out other possible causes.
Slurred Speech: A Sign of Low Blood Sugar
Slurred speech can be an unexpected sign of low blood sugar, typically occurring when glucose levels drop below 40 mg/dL. If you experience this symptom along with difficulty processing language, it’s a clear indication that it’s time to eat. Other moderate symptoms may include muscle twitching, unsteady walking, and emotional fluctuations. As blood sugar levels drop, symptoms progress incrementally. Understanding the difference between mild and moderate symptoms can help you take action before things worsen.
Your Sleep Is Disrupted: A Sign of Low Blood Sugar
If you’re having trouble falling asleep, you’re not alone, around one-third of adults experience chronic insomnia. Regular sleep disturbances can sometimes be linked to nocturnal hypoglycemia, or low blood sugar at night. Along with disrupted sleep, symptoms may include night sweats and waking up feeling unrested or irritable. Maintaining a healthy sleep cycle is essential for regulating blood sugar levels and reducing the risk of obesity and diabetes.
Seizures and Coma: Severe Consequences of Low Blood Sugar
While most dips in blood sugar can be quickly corrected, severe drops require immediate attention to avoid serious complications like seizures, fainting, or even brain damage. For individuals with diabetes, dangerously low blood sugar can lead to a diabetic coma, which can also occur with high blood sugar. Early symptoms typically precede a coma, so it’s crucial to raise your blood sugar gradually using glucose tablets or even regular soda to prevent further complications.
Heart Palpitations: A Sign of Low Blood Sugar
Heart palpitations, rapid heartbeat, or fluttering can be a sign of low blood sugar, according to Health Direct. When glucose levels drop, the body releases adrenaline, triggering the “fight-or-flight” response, which causes these symptoms. Hypoglycemia can also lead to irregular heartbeats and reduced blood flow to the heart, potentially resulting in cardiac arrhythmia. Although rare, this can sometimes lead to “dead in bed” syndrome in individuals with type 1 diabetes.
