Why do lipids contain the most energy?
                                
                                
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                                    4 min read                                
                            
                                Gram for gram, lipids (fats) provide more than double the energy of carbohydrates or proteins, delivering approximately 9 kilocalories per gram compared to just 4 kilocalories. This remarkable efficiency explains why do lipids contain the most energy and is a key evolutionary advantage for long-term energy storage in living organisms.