
What Is Metabolic Adaptation and Why Does It Occur?
For a long time, people have been aware that total daily energy expenditure (TDEE) changes during phases of dieting. Personally, my first insight into this phenomenon was when I saw the phrase “metabolic damage” a bit over 5 years ago. This was at some stage in my nutrition degree at university. My understanding of the concept was that if somebody was aiming for weight-loss and was in a calorie deficit for an extended period, their “metabolism” (which I didn’t fully understand at the time) would slow down. My take on the main difference between metabolic damage and metabolic adaptation is that ”damage” indicates that there is an issue, whereas adaptation indicates that the body is making an adjustment. Damage could indicate that the metabolism is broken and needs to be…