How many calories are in a 16 oz Vanilla Shake? The Surprising Truth
                                
                                
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                                    4 min read                                
                            
                                According to nutritional data from various food databases, a 16 oz vanilla shake can contain anywhere from 420 to over 790 calories, depending on where it is made and the specific ingredients used. This wide range highlights why simply asking "how many calories are in a 16 oz vanilla shake?" doesn't yield a single, simple answer and why knowing the source is crucial.