Repeat: At her heaviest: Siobhann, who weighed 19st 10lb and had a 48 per cent body fat, was warned by doctors that she might not be able to conceive if she didn't lose weight .
At her heaviest: Siobhann, who weighed 19st 10lb and had a 48 per cent body fat, was warned by doctors that she might not be able to conceive if she didn't lose weight .