Final answer:
Recommended nutrient intakes indeed vary due to genetic traits, pregnancy and breastfeeding, as well as age and gender, among others. All these factors must be considered to maintain a balanced diet tailored to individual needs based on their unique circumstances. The correct answer is option d. all of the above.
Step-by-step explanation:
Recommended nutrient intakes vary for several reasons, and the correct answer to the question is d. all of the above. This includes:
- genetic traits, as individual genetics can affect nutrient absorption and metabolism,
- pregnancy & breastfeeding status, which increases nutrient demands to support fetal development and milk production,
- age & gender, which influence nutrient requirements due to physiological changes and differences in body composition,
- and considerations of weight & height, which affect basal metabolic rate and energy needs.
A balanced diet is crucial as it provides the necessary nutrients to maintain proper bodily functions, good health, and reproductive capability. The components and proportions of a balanced diet will shift based on these factors. According to the FDA, even the daily values (DV) for nutrients provided are based on averages and specific individual needs can vary.