Question

multiple choice question
people on long - term antibiotic therapy may have poor vitamin k status because:

• antibiotics bind to vitamin k in the stomach, thus limiting its absorption.
• antibiotics causes liver damage, which disrupts storage of vitamin k.
• doctors advise patients to avoid vitamin k containing foods to prevent nutrient medication interactions.
• antibiotics eliminates intestinal bacteria that is a source of vitamin k for humans.

Explanation:

Intestinal bacteria can synthesize vitamin K for humans. Antibiotics kill these beneficial bacteria, reducing the body's source of vitamin K, which can lead to poor vitamin K status in long - term antibiotic users. Antibiotics do not bind to vitamin K in the stomach, do not typically cause liver damage that disrupts vitamin K storage in this context, and there is no common advice to avoid vitamin K - containing foods specifically due to antibiotic use to prevent nutrient - medication interactions.

Answer:

D. antibiotics eliminates intestinal bacteria that is a source of vitamin K for humans.