&gt; people who are born with unusually efficient microbiomes<p>Have you looked at obesity statistics?  <a href="http:&#x2F;&#x2F;www.niddk.nih.gov&#x2F;health-information&#x2F;health-statistics&#x2F;Pages&#x2F;overweight-obesity-statistics.aspx" rel="nofollow">http:&#x2F;&#x2F;www.niddk.nih.gov&#x2F;health-information&#x2F;health-statistic...</a><p>&gt; More than 1 in 3 adults are considered to be obese.
&gt; More than 1 in 6 children and adolescents ages 6 to 19 are considered to be obese.<p>Do you mean to say that 33% of <i>quantifiably obese</i> adults have unusually efficient gut bacteria?  These aren&#x27;t strange outliers, it&#x27;s one third of the adult population.