What is the approximate difference in caloric value between one cup of whole milk and one cup of 2% reduced-fat milk?

The choice of 27 kilocalories as the approximate difference in caloric value between one cup of whole milk and one cup of 2% reduced-fat milk is accurate due to the typical nutritional composition of these two milk types. Whole milk generally contains about 150 calories per cup, while 2% milk has around 123 calories per cup. The difference of approximately 27 kilocalories is primarily attributed to the fat content in whole milk, which is higher compared to 2% milk due to the latter having some fat removed. This reduction in fat significantly lowers the overall calorie count while still providing essential nutrients like calcium and vitamin D. Understanding these values is important for nutritional planning, especially when considering dietary fat intake and overall caloric consumption.