title: Average Age from DOB Field - MySQL / PHP
body: <p>I wasn't sure how I could calculate the average age of my contacts who all exist in a mysql table with a DOB date field such as YYYY-MM-DD.</p>
  
  <p>Is there a way to do with with a MySQL call (please note I am using cakephp but that shouldn't be an issue)</p>
  
  <p>Thanks</p>