Comprehension-Level Multiple-Choice Items

A person’s absorption of calcium varies based on:

Question

​Comprehension-Level Multiple-Choice Items

A person’s absorption of calcium varies based on:​

BlackTom AI · Accepted Answer

The question presented is: 'A person’s absorption of calcium varies based on:​' and the provided data stores the correct answer as '​age or life stage.' However, the options list is missing, so we cannot evaluate alternative choices.

With that caveat in mind, let's reason about why age or life stage influences calcium absorption. Calcium absorption is not constant throughout life; it changes across developmental periods due to physiological and hormonal factors. In infancy and early childhood, rapid growth requires efficient calcium absorption to support bone development, and the body adapts by increasing intestinal uptake (a combination of higher 1,25-dihydroxyvitamin D activity and other gut adaptations). During puberty, estrogen and growth-related hormones enhance calcium absorption to support rapid bone accretion.

In adulthood, particularly premenopausal years, absorption remains competent but can be influenced by dietary calcium intake, vitamin D status, and overall health; however, the baseline capacity remains relatively stable compared to during growth periods.

In older adulthood, calcium absorption generally declines due to decreased intestinal efficiency and changes in vitamin D metabolism, along with hormonal shifts (for example, reduced estrogen after menopause) that affect calcium homeostasis. This age-related decline helps explain why older individuals are at higher risk for osteoporosis if intake or absorption is insufficient.

If distractors had included options like 'diet and calcium intake,' 'season,' or 'activity level,' those might describe modulating factors but would not universally explain absorption variability as directly as life stage does. Diet, for example, affects net calcium status but does not determine the fundamental capacity of absorption across life stages.

In summary, age or life stage is a primary factor in calcium absorption due to developmental needs, hormonal regulation, and changes in gut physiology across the lifespan, which is why the stated correct answer aligns with the biology of calcium uptake.

Fal25_NUTR011_78664 Quiz - Minerals, H20 & Nutrients Involved in Bone Health

Comprehension-Level Multiple-Choice Items A person’s absorption of calcium varies based on:

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