Which Nutrient is Responsible for Brain Development? The Complex Answer
                                
                                
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                                    4 min read                                
                            
                                The human brain reaches 80% of its adult weight by age two and 90% by age five, a period of rapid growth profoundly influenced by nutrition. When asking which nutrient is responsible for brain development, the simple answer is none, as it requires a synergistic effort of many vital compounds.