Question

multiple choice question

which of the following prevents calcium absorption in the digestive tract?

running
alcohol
smoking
biking

Explanation:

Analyze the physiological factors of calcium absorption

Using the Calcium Sources and Calcium Nutrition knowledge points

• Active transport of calcium in the duodenum requires active vitamin D (calcitriol).
• Alcohol consumption directly inhibits the expression of duodenal calcium transport proteins and interferes with vitamin D activation in the liver and kidneys.
• Physical activities like running and biking promote bone remodeling but do not inhibit digestive absorption.
• Smoking negatively impacts bone density primarily through osteoblast activity rather than direct digestive tract absorption inhibition.

Evaluate the given options

• running: Weight-bearing exercise that stimulates bone deposition.
• alcohol: Directly impairs intestinal calcium absorption and vitamin D metabolism.
• smoking: Decreases bone density but is not the primary direct inhibitor of digestive tract calcium absorption compared to alcohol.
• biking: Non-weight-bearing exercise with no inhibitory effect on calcium absorption.

Answer:

• running
• alcohol (Correct answer)
• smoking
• biking