In parenteral nutrition, what is the recommended fat contribution and the minimum percentage of calories from fat for essential fatty acids?

• A. 20-30% of kcal from fat; at least 10% of kcal from fat for essential fatty acids
• B. 40-50% of kcal from fat; at least 20% from fat for essential fatty acids
• C. 5-10% of kcal from fat; no minimum
• D. 60% of kcal from fat; at least 30% from essential fatty acids

Answer: (A)

In parenteral nutrition, the fats you provide must balance delivering enough calories with meeting essential fatty acid needs. Fats are energy-dense, so aiming for about 20–30% of total daily calories from fat helps supply adequate energy while also ensuring essential fatty acids are provided. Essential fatty acids (the fatty acids the body cannot make) require a minimum intake, typically around 10% of total calories from fat, to prevent deficiency. Providing less fat risks essential fatty acid deficiency, while giving too much fat can raise the risk of complications like hyperlipidemia and liver issues. Therefore, the best approach is about 20–30% of calories from fat, with a minimum of around 10% of calories from fat dedicated to essential fatty acids.