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Questions and Answers
Which of the following statements about calcium sources is correct?
Which of the following statements about calcium sources is correct?
- Calcium is primarily found in fruits and grains.
- Dairy products are the only reliable source of calcium.
- Calcium is synthesized in the body from other nutrients.
- Intact salmon and canned sardines are good sources of calcium. (correct)
What is the connection between vitamin D and bone health?
What is the connection between vitamin D and bone health?
- Vitamin D has no significant impact on bone health.
- Vitamin D is not necessary if calcium intake is sufficient.
- Vitamin D is only important for calcium production.
- Vitamin D aids in calcium absorption and plays a role in bone remodeling. (correct)
Which group is at a higher risk of vitamin D deficiency?
Which group is at a higher risk of vitamin D deficiency?
- People with lighter skin tones.
- Those with darker complexions and those in northern latitudes. (correct)
- Individuals living in southern latitudes.
- Athletes who spend a lot of time outdoors.
Why is dietary calcium inadequate without vitamin D?
Why is dietary calcium inadequate without vitamin D?
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What is a primary source of vitamin D for most individuals?
What is a primary source of vitamin D for most individuals?
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Study Notes
Calcium and Bone Health
- Calcium is essential for bone health, primarily in the forms of calcium phosphate and calcium carbonate.
- The body cannot synthesize calcium; it must be obtained from dietary sources.
Importance of Vitamin D
- Vitamin D is crucial for calcium absorption in the small intestine.
- It also contributes to bone remodeling, although its exact role in this process is not fully understood.
Dietary Sources of Calcium
- Major sources of calcium include:
- Dairy products (e.g., milk, cheese, yogurt).
- Green leafy vegetables (e.g., kale, spinach).
- Broccoli.
- Fish with soft bones, such as intact salmon and canned sardines.
- Nuts, beans, seeds, and shellfish provide calcium in lesser amounts.
Sources of Vitamin D
- Natural food sources of vitamin D are limited to certain items:
- Fatty fish like salmon and tuna.
- Fortified foods (such as milk and cereals).
- The body can produce vitamin D through skin exposure to sunlight.
Vitamin D Deficiency
- Many individuals, particularly those with darker skin and those living in northern latitudes, may experience vitamin D deficiency due to insufficient sunlight exposure.
- In cases of deficiency, healthcare providers can prescribe vitamin D supplements.
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