Have you ever wondered what would happen if you replaced every meal with whey protein powder? With the global market for protein powder soaring at an annual value of $18.9 billion, and half of those sales coming from the US alone, it's a question that's worth exploring. Once an athlete's staple, protein powder has now become a daily supplement for many. But is it wise to rely on it entirely for your nutritional needs? Let's dive into the science behind this dietary choice and its potential impacts on your brain and body.