Do Kisses Have Protein? The Scientific Breakdown of Saliva
                                
                                
                                •
                                
                                
                        
                                    
                                    5 min read                                
                            
                                A great deal of biological swapping happens in a kiss, with one fun fact noting the transfer of 0.5 milligrams of protein. But do kisses have protein in a meaningful, nutritional sense? While technically yes, the protein found in saliva is vastly different from dietary protein and serves specific, non-nutritional functions.