How many grams of protein per day if I weigh 120 pounds?
                                
                                
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                                    4 min read                                
                            
                                According to the Recommended Dietary Allowance (RDA), a sedentary adult needs at least 0.36 grams of protein per pound of body weight. This calculation shows how many grams of protein per day if I weigh 120 pounds starts at a minimum of around 43 grams, though this amount varies significantly based on your activity level.