Think it’s because people don’t separate energy intake and nutrition as two independent considerations. Re: supersize me. He had an oversupply of energy leading to obesity but also was suffering from malnutrition. Assuming in that specific case his energy needs were well met but possibly his mental performance would have suffered due to malnutrition.
Edit—also the outcomes of too much of either are quite different. Excess energy generally produces obesity, excess nutrition can result in poisoning. Symptoms of either represent themselves in completely different ways physically / mentally.
Think it’s because people don’t separate energy intake and nutrition as two independent considerations. Re: supersize me. He had an oversupply of energy leading to obesity but also was suffering from malnutrition. Assuming in that specific case his energy needs were well met but possibly his mental performance would have suffered due to malnutrition.
Edit—also the outcomes of too much of either are quite different. Excess energy generally produces obesity, excess nutrition can result in poisoning. Symptoms of either represent themselves in completely different ways physically / mentally.