leanne kenny , 23 , from northwich , cheshire , reached almost 20 stone after repeatedly taking home end-of-the-line discounted junk food .
the supermarket worker would snack on bumper bars of chocolate , baked goods and fizzy drinks going cheap because of their sell-by dates .
leanne kenny ballooned to almost 20st after snacking on leftover goods at her place of work , but after ditching the snacks leanne has lost seven stone after ditching the habit .