Lack of what causes diabetes
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Insulin
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Vitamins
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Calcium
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Sugar
A
Correct answer
Explanation
Diabetes is caused by insufficient insulin production (Type 1) or insulin resistance (Type 2). Insulin is the hormone that regulates blood sugar levels by allowing cells to absorb glucose. Vitamins and calcium are essential nutrients but not directly related to diabetes causation, while sugar is a factor that can exacerbate the condition rather than cause it.