It&#x27;s really easy to see online too.  Just browse online dating profiles for large cities versus suburbs (or walkable&#x2F;transit cities versus car-only cities).  People go from looking like actual people to looking like comical balloons.<p>Obesity is a national (global?) security crisis.  It will cost trillions in preventable medical expenses, it causes excess fuel consumption, reduces productivity, and government+industry seems complicit in continuing the trend based on city planning and subsidy allocations.  (Not to mention government policies&#x2F;recommendations probably started the whole obesity crisis by promoting &quot;low fat, high carb+sugar&quot; eating practices (&quot;food pyramid&quot;) for two dozen years across an increasingly sedentary population.)