How Many Nonessential Amino Acids Exist in 5, 9, 11, and 20?
                                
                                
                                •
                                
                                
                        
                                    
                                    3 min read                                
                            
                                Of the 20 standard amino acids that form proteins in the human body, the number of nonessential amino acids is 11. This fact helps clarify the numbers 5, 9, 11, and 20, by identifying 11 as the correct quantity that the body can synthesize on its own.