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Which disease is caused by a deficiency of insulin?

  • A Goitre from iodine deficiency
  • B Diabetes mellitus (Type 1)
  • C Rickets from vitamin D lack
  • D Anaemia from iron deficiency

Correct answer: B. Diabetes mellitus (Type 1)

Explanation: Type 1 diabetes mellitus is caused by destruction of pancreatic beta cells, leading to insulin deficiency. Without insulin, glucose cannot enter cells, causing hyperglycaemia. Type 2 diabetes involves insulin resistance.

Concept context

Pathogens, infectious diseases, non-infectious diseases, drugs, cancer, and public health. High NEET importance.

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