Which factor can affect the effectiveness of medication by altering metabolism and absorption?

Which factor can affect the effectiveness of medication by altering metabolism and absorption?

• A. Age has no effect on drug metabolism
• B. Time of day is the only factor in absorption
• C. Brand name status determines efficacy
• D. Nutrition and physical activity affect drug therapy

Answer: (D)

Nutrition and physical activity influence how a drug is absorbed and metabolized, shaping its overall effect. Food can slow or speed absorption by altering gastric emptying, intestinal pH, and interactions with the drug compound; it can also induce or inhibit liver or gut enzymes that metabolize medications, changing how quickly the drug is processed. Nutritional status affects distribution as well—low protein intake can reduce albumin levels, increasing the amount of free (active) drug in the body and potentially altering effect and toxicity. Physical activity changes blood flow to the gastrointestinal tract and liver and can modify metabolic rate, which can shift both absorption and first-pass metabolism. Taken together, these factors can significantly change drug levels and responses. For other choices: age does influence metabolism, so saying it has no effect isn’t correct; time of day isn’t the only factor affecting absorption; brand name status does not determine the drug’s efficacy.

Nutrition and physical activity influence how a drug is absorbed and metabolized, shaping its overall effect. Food can slow or speed absorption by altering gastric emptying, intestinal pH, and interactions with the drug compound; it can also induce or inhibit liver or gut enzymes that metabolize medications, changing how quickly the drug is processed. Nutritional status affects distribution as well—low protein intake can reduce albumin levels, increasing the amount of free (active) drug in the body and potentially altering effect and toxicity. Physical activity changes blood flow to the gastrointestinal tract and liver and can modify metabolic rate, which can shift both absorption and first-pass metabolism. Taken together, these factors can significantly change drug levels and responses. For other choices: age does influence metabolism, so saying it has no effect isn’t correct; time of day isn’t the only factor affecting absorption; brand name status does not determine the drug’s efficacy.