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Vitamin D and Its Role in Human Health Quiz

#1

What is the primary source of vitamin D for humans?

Sunlight
Explanation

Sunlight is essential for the synthesis of vitamin D in the skin.

#2

Which form of vitamin D is synthesized in the skin upon exposure to sunlight?

Vitamin D3
Explanation

Vitamin D3 is produced when sunlight interacts with the skin.

#3

What is the active form of vitamin D in the body?

Vitamin D3
Explanation

Vitamin D3 is the biologically active form of vitamin D.

#4

What is the role of vitamin D in the body?

Bone health and calcium absorption
Explanation

Vitamin D is crucial for maintaining bone health and aiding in calcium absorption.

#5

Which population group is at a higher risk of vitamin D deficiency?

Elderly
Explanation

Elderly individuals are more prone to vitamin D deficiency due to reduced skin synthesis and dietary intake.

#6

What is the recommended daily intake of vitamin D for adults?

600 IU
Explanation

Adults are recommended to consume 600 IU of vitamin D daily.

#7

Which of the following foods is a good source of vitamin D?

Milk
Explanation

Milk is fortified with vitamin D, making it a good dietary source.

#8

Which of the following is a symptom of vitamin D deficiency?

Bone pain
Explanation

Bone pain can be a symptom of insufficient vitamin D levels.

#9

What happens if there is excess vitamin D in the body?

Increased calcium absorption
Explanation

Excess vitamin D can lead to increased calcium absorption, potentially causing hypercalcemia.

#10

Which of the following diseases is associated with low levels of vitamin D?

Osteoporosis
Explanation

Low vitamin D levels are linked to osteoporosis, a condition characterized by weakened bones.

#11

What is the role of vitamin D in the immune system?

It enhances the immune response
Explanation

Vitamin D plays a role in enhancing the immune system's response to infections and diseases.

#12

Which of the following is a function of vitamin D in the body?

Regulation of blood pressure
Explanation

Vitamin D contributes to the regulation of blood pressure in the body.

#13

How does vitamin D affect the absorption of calcium?

It increases calcium absorption
Explanation

Vitamin D enhances the absorption of calcium in the intestines.

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