More than one million people in the UK are believed to have type 2 diabetes without knowing it, according to the NHS, as reported by Express.
The condition occurs when the body does not produce enough insulin or when insulin does not work as it should.
This leads to elevated blood sugar levels, which can result in serious health problems.
People who are overweight, have high blood pressure, lead a sedentary lifestyle, or have close family members with the condition are at greater risk.
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Age and ethnic background can also play a role, according to the NHS.
Symptoms can be difficult to detect
Many people associate type 2 diabetes with excessive thirst, fatigue, and frequent urination, but the condition often develops gradually, and some people experience no obvious symptoms at all.
The NHS therefore recommends that anyone who suspects they may have the condition should be examined by a doctor.
This is especially important for those who also belong to a high-risk group.
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The sign appears in the eyes
One of the lesser-known symptoms is blurred vision.
According to the NHS, high blood sugar levels can affect the eyes and cause vision problems.
Express highlights this symptom as an important warning sign that is easily overlooked.
Blurred vision can have many different causes, but if it occurs alongside other symptoms of type 2 diabetes, the NHS recommends seeking medical advice and getting examined.
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