Why Do Protein Shakes Give Me Anxiety? Uncovering the Surprising Causes
                                
                                
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                                    5 min read                                
                            
                                According to a meta-analysis, caffeine intake can significantly increase the risk of anxiety in healthy individuals, especially in doses above 400mg. If you find yourself asking, 'Why do protein shakes give me anxiety?', an ingredient in your powder might be the culprit, affecting your nervous system or creating digestive distress.