What is the recommended daily allowance (RDA) of vitamin C for adults?

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Multiple Choice

What is the recommended daily allowance (RDA) of vitamin C for adults?

Vitamin C is needed daily to support collagen formation, wound healing, antioxidant protection, and iron absorption, and the amount considered sufficient for most healthy adults is set as the RDA. For adults, the established RDAs are 90 mg per day for men and 75 mg per day for women. The value 90 mg/day matches the typical adult baseline used in nutrition references, which is why it’s selected as the best answer here. Keep in mind that smokers require about an extra 35 mg/day, bringing their need closer to 125 mg/day, and pregnancy or lactation raise the requirement further. The other options don’t fit the standard adult baseline: 75 mg/day is the female RDA, 50 mg/day is below the recommended amount, and 100 mg/day is higher than the standard RDA for general adults.

Vitamin C is needed daily to support collagen formation, wound healing, antioxidant protection, and iron absorption, and the amount considered sufficient for most healthy adults is set as the RDA. For adults, the established RDAs are 90 mg per day for men and 75 mg per day for women. The value 90 mg/day matches the typical adult baseline used in nutrition references, which is why it’s selected as the best answer here. Keep in mind that smokers require about an extra 35 mg/day, bringing their need closer to 125 mg/day, and pregnancy or lactation raise the requirement further. The other options don’t fit the standard adult baseline: 75 mg/day is the female RDA, 50 mg/day is below the recommended amount, and 100 mg/day is higher than the standard RDA for general adults.

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