From: here@is.invalid   
      
   Study finds significant variation in anatomy of human guts   
   ...   
   ...   
   "There was research more than a century ago that found variability in   
   the relative lengths of human intestines, but this area has largely   
   been ignored since then," says Amanda Hale, co-first author of the   
   study and a Ph.D. candidate at North Carolina State University. "When   
   we began exploring this issue, we were astonished at the extent of the   
   variability we found."   
   ...   
   ...   
   In another striking example, the researchers found that women tend to   
   have longer small intestines than men.   
      
   "Because having a longer small intestine helps you extract nutrients   
   from your diet, this finding supports the canalization hypothesis,   
   which posits that women are better able to survive during periods of   
   stress," says Hale.   
      
   "Given that there is more variation in human gut anatomy than we   
   thought, this could inform our understanding of what is driving a   
   range of health-related issues and how we treat them," says McKenney.   
   "Basically, now that we know this variability exists, it raises a   
   number of research questions that need to be explored."   
      
   https://www.eurekalert.org/news-releases/986309   
      
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