Question

Petros, a 33-year-old male, wants to estimate his protein needs based on the AMDR. The Food and Nutrition Board recommends that 10–35% of calories come from protein. If Petros follows a 2300-kilocalorie diet, approximately how many grams of protein per day should he consume?

Multiple Choice

26–89 grams of protein per day


230–805 grams of protein per day


58–201 grams of protein per day


23–81 grams of protein per day

Answer 1

To estimate Petros's protein needs based on the Acceptable Macronutrient Distribution Range (AMDR), we first need to calculate the total calories coming from protein according to the recommended percentage range of 10% to 35% of total calorie intake.

1. **Calculate Protein Calories:**
- For 10% of a 2300-kilocalorie diet:
\[
0.10 \times 2300 \text{ kcal} = 230 \text{ kcal}
\]
- For 35% of a 2300-kilocalorie diet:
\[
0.35 \times 2300 \text{ kcal} = 805 \text{ kcal}
\]

2. **Convert Calories to Grams of Protein:**
- Since 1 gram of protein provides approximately 4 kilocalories:
- For 230 kcal from protein:
\[
\frac{230 \text{ kcal}}{4 \text{ kcal/g}} = 57.5 \text{ g}
\]
- For 805 kcal from protein:
\[
\frac{805 \text{ kcal}}{4 \text{ kcal/g}} = 201.25 \text{ g}
\]

3. **Determine the Range of Protein Intake:**
- Therefore, Petros should aim to consume between approximately 58 grams and 201 grams of protein per day.

Based on these calculations, the correct answer is **58–201 grams of protein per day**.