What is the acceptable macronutrient distribution range AMDR for fat for adults?

• A. 10-25% of total daily calories
• B. 20-35% of total daily calories
• C. 30-45% of total daily calories
• D. 5-15% of total daily calories

Answer: (B)

Fats are a key energy source and provide essential fatty acids and fat-soluble vitamins, so the amount you should get from fat is set as a range rather than a fixed number. The acceptable macronutrient distribution range for fat in adults is 20-35% of total daily calories. This balance ensures you meet essential fatty-acid and vitamin needs while leaving enough carbohydrates and protein to support energy, recovery, and metabolic functions, without tipping total calories too high.

Choosing a range below this, like 10-25%, could leave essential fatty-acid needs unmet and limit fat-soluble vitamin absorption. Going higher than this, such as 30-45%, may supply more fat than necessary and reduce the intake of other macronutrients, potentially affecting overall nutrient adequacy and health goals. A very low range like 5-15% is far outside recommendations and would not provide enough fat for essential functions.