We found strong evidence to support beneficial effects of child obesity prevention programmes on BMI, particularly for programmes
targeted to children aged six to 12 years. However, given the unexplained heterogeneity and the likelihood of small study bias, these
findings must be interpreted cautiously. A broad range of programme components were used in these studies and whilst it is not possible
to distinguish which of these components contributed most to the beneficial effects observed, our synthesis indicates the following to
be promising policies and strategies:
· school curriculum that includes healthy eating