Which deficiency causes neuropathy but not anemia?

• A. Folate
• B. Copper
• C. Thiamin
• D. Zinc

Answer: (D)

Neuropathy without anemia points to a deficiency that primarily harms nerves rather than red blood cell production. Thiamin deficiency causes peripheral neuropathy (classic dry beriberi) due to impaired nerve energy metabolism, and it does not typically cause anemia. Folate deficiency leads to anemia from disrupted DNA synthesis in hematopoietic cells. Copper deficiency can cause neuropathy but also anemia because copper is needed for iron utilization. Zinc deficiency presents with other signs like dermatitis and growth issues, not a classic neuropathy. Therefore, thiamin deficiency best fits neuropathy without anemia.