Nutrient requirements increase for most of the nutrients. One exception is ________________ .答案选项组FolateProteinIronCalcium

The statement refers to nutrient requirements during certain life stages or conditions where most nutrients typically see an increase, except for one specific nutrient.

When analyzing nutrient requirements:

1. Folate: During pregnancy, the requirement for folate increases significantly to support fetal development and prevent neural tube defects.

2. Protein: Protein needs generally increase to support growth and tissue repair, particularly in children, adolescents, and pregnant women.

3. Iron: Iron requirements also tend to rise during pregnancy and for individuals with certain health conditions, as iron is essential for blood health and oxygen transport.

4. Calcium: While calcium needs can increase during adolescence and pregnancy to support bone growth, they do not see an increase in all life stages. However, in adults, the recommended intake tends to remain stable and does not increase.

From this analysis, the correct answer to the exception in nutrient requirements that does not typically increase significantly would be Calcium. This is because, although calcium is crucial, its requirement does not increase as much as the others during most life stages compared to the significant increases seen in folate, protein, and iron.

Final Answer

Calcium