You are putting words in his mouth here, as I read it, as you rely on your belief that obesity can <i>only</i> be the result of overeating.<p>- The microbiome is a factor, which is only in the past few years being explored.<p>- thyroid hormone levels are a <i>big</i> factor<p>- genetics are a factor (note that identical twins raised in different environments tend to end up more alike each other in BMI than like their siblings in the same environment)<p>- genetic low-response to cardio (check out the recent University of Bath study)<p>- viruses are a factor (AD-36 being one known one)<p>- percentage of BAT (&quot;brown fat&quot;) is a factor<p>- systemic inflammation is a factor<p>etc.
etc.