>> This suggests that while I was technically overeating -- by just couple of grams per day I doubt you've hit this average, as it's unlikely you live in a com

>> This suggests that while I was technically overeating -- by just couple of grams per day I doubt you've hit this average, as it's unlikely you live in a completely controlled vacuum. It's more likely you've had far more noticable and extreme periods of change in both directions, while trending upward as you age and change your lifestyle. To put it another way: I've gained 6g per day over my entire life. That's not much more than your 20 year example but there's a pretty obvious difference between me as a newborn and present day me.