High blood sugar means insulin is not keeping up: either your cells resist it (the type 2 pathway) or the pancreas falls short (type 1, and late type 2), per MedlinePlus. The harm is slow corrosion - eyes, kidneys, nerves, arteries - so management is complication prevention.
The stages: prediabetes (A1C 5.7 percent and up), where lifestyle change has its strongest reversal evidence, then diabetes territory (6.5 and up), where medication usually joins. Symptoms of truly high sugar: intense thirst, frequent urination, fatigue, blurred vision - and very high sugar with vomiting, confusion, or deep breathing is an emergency. One elevated reading is not a diagnosis - illness, stress, and steroids spike anyone - so expect a confirming A1C. Pymander is a free AI doctor, 24/7 by text, and can read your numbers in context.
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What does high blood sugar mean?
High blood sugar means glucose is accumulating in your bloodstream because insulin - the hormone that moves sugar from blood into cells - is not keeping up: either your cells are ignoring it (insulin resistance, the type 2 pathway) or your pancreas is not making enough (the type 1 pathway, and late-stage type 2), per MedlinePlus's blood-glucose guidance. Why it matters: circulating sugar is corrosive in slow motion - years of excess damage the small vessels of the eyes, kidneys, and nerves and accelerate artery disease, which is why diabetes management is really complication prevention. The stages: a fasting glucose or A1C creeps first into prediabetes (A1C 5.7 percent and up) - the stage where the evidence is strongest that lifestyle change (weight, movement, food pattern) can reverse course entirely - then into diabetes territory (A1C 6.5 percent and up), where medication usually joins. The symptoms of actually-high sugar: intense thirst, frequent urination, fatigue, blurred vision - and very high sugar is an emergency (vomiting, confusion, fruity breath, deep breathing). One elevated reading is not a diagnosis - illness, stress, and steroids can spike anyone - so expect a confirming test, typically the A1C. Pymander is a free AI doctor, 24/7 by text, that can help you read your numbers in context.