High blood sugar, or hyperglycemia, is a health issue that can quietly develop, with early symptoms that are often subtle and easy to dismiss. Recognising these signs is the first step toward preventing potentially serious long-term complications.
Understanding High Blood Sugar
Hyperglycemia
occurs when there is too much glucose, a type of sugar, in your bloodstream. Glucose is your body's primary energy source, and its levels are mainly regulated by insulin, a hormone produced by the pancreas. When your body either doesn't produce enough insulin or can't use it effectively (a condition known as insulin resistance), glucose builds up in the blood instead of being used by your cells for energy. While it's most commonly associated with diabetes, high blood sugar can be triggered by other factors, including illness, stress, certain medications, or diet.
Common Early Warning Signs
The initial symptoms of high blood sugar often develop gradually and can be mistaken for everyday issues. Paying attention to these early signals is crucial. Common signs include increased thirst and a dry mouth, as your body pulls fluid from tissues to dilute the excess sugar in your blood. This leads to another key symptom: frequent urination, as the kidneys work overtime to flush out the glucose. You might also experience persistent fatigue or weakness, as your cells are deprived of the energy they need from glucose. Blurred vision can also occur when high sugar levels cause the lens of your eye to swell.
Progressing and More Serious Symptoms
If hyperglycemia is not addressed, symptoms can become more pronounced. You might notice unexplained weight loss, even with increased hunger, because your body starts breaking down muscle and fat for energy. Other signs include slow-healing cuts and sores, as high blood sugar impairs circulation and the body's natural repair processes. Frequent skin or urinary tract infections are also common, since bacteria can thrive in a high-sugar environment. Some people experience headaches or have difficulty concentrating.
When to Seek Medical Attention
If you notice a persistent pattern of any of these symptoms, it is essential to consult a doctor. Do not attempt to diagnose yourself. A healthcare provider can perform simple blood tests, such as a fasting glucose test or an A1C test, to measure your blood sugar levels and determine the cause. It's especially important to seek prompt medical advice if you experience more severe symptoms like nausea and vomiting, stomach pain, or breath that has a 'fruity' smell, as these could indicate a dangerous condition called diabetic ketoacidosis (DKA).
The Dangers of Ignoring the Signs
Left untreated, chronically high blood sugar can lead to serious and permanent health problems. Over time, it can damage blood vessels throughout the body, significantly increasing the risk of heart disease and stroke. It can also cause damage to the nerves (neuropathy), especially in the hands and feet, leading to pain, tingling, or a loss of feeling. Other longterm complications include kidney disease, which can progress to kidney failure, and eye damage, which can result in vision loss and blindness.
