This is purely anecdotal...<p>I&#x27;m now almost 40 years old and have never been overweight a day in my life.  Over the past 20 years my weight has always stayed within about a 15 pound range no matter how much&#x2F;little I ate and&#x2F;or exercised.<p>I participated in a caloric intake study at one point in time and I had a higher caloric intake than anyone in the study group.  I was not trying to eat more; it was just that until I hit my mid 20s I had to consume excessive quantities of food just to keep from losing weight.