Blood sugar, also known as blood glucose, is the main type of sugar found in your blood. It comes from the food you eat and is your body’s primary source of energy. Your body breaks down most of the food you consume into glucose and releases it into your bloodstream. When your blood glucose levels rise, it signals your pancreas to release insulin, which helps cells absorb glucose for energy.
Maintaining normal blood sugar levels is crucial for overall health. For most people without diabetes, normal fasting blood sugar levels are between 70-100 mg/dL, and levels should be below 140 mg/dL after meals2. For those with diabetes, target levels can vary but generally aim to keep fasting levels between 80-130 mg/dL and post-meal levels below 180 mg/dL3.
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