article_snippet.sent: The trainee teacher put on more than three stone in The trainee teacher , spending almost £1,000 on food in The trainee teacher first term alone.
article_snippet.sent: and I just kept piling on the pounds,' says The trainee teacher. '
article_snippet.sent: Weighing 12.5 stone, left, The trainee teacher went on to lose three stone, right .
article_snippet.sent: In just five months, her sister's weight plummeted from 12 and a half stone to 9 and a half stone.
article_snippet.sent: I put on two and a half stone after just three months. '