Which term describes the ability of a nutrient to be readily absorbed and used by the body?

Which term describes the ability of a nutrient to be readily absorbed and used by the body?

• A. Bioavailable
• B. Basal metabolism rate
• C. Aspirated
• D. Avitaminosis

Answer: (A)

Bioavailability describes the extent to which a nutrient can be absorbed from the diet and then used by the body's tissues. It’s about how much actually enters the bloodstream and becomes available for metabolism and function, not just how much is eaten. Factors like the food matrix, digestion, and interactions with other nutrients influence it—for example, fat helps absorption of fat-soluble vitamins, while compounds like phytates can hinder mineral absorption; vitamin C can enhance iron absorption. The other terms aren’t about absorption and use: basal metabolic rate is the energy cost at rest, aspirated relates to drawing material into the airway, and avitaminosis is a vitamin deficiency.

Bioavailability describes the extent to which a nutrient can be absorbed from the diet and then used by the body's tissues. It’s about how much actually enters the bloodstream and becomes available for metabolism and function, not just how much is eaten. Factors like the food matrix, digestion, and interactions with other nutrients influence it—for example, fat helps absorption of fat-soluble vitamins, while compounds like phytates can hinder mineral absorption; vitamin C can enhance iron absorption. The other terms aren’t about absorption and use: basal metabolic rate is the energy cost at rest, aspirated relates to drawing material into the airway, and avitaminosis is a vitamin deficiency.