Furthermore, higher and more diverse food consumption (see Chapter 2) was accompanied by a range of complementary interventions such as nutritional supplements and health care that also contributed to the success of the programme (Ruel and Alderman, 2013, Skoufias, 2005). For example, evidence from randomized controlled trials in China, Jamaica and Kenya, found that, over a 19-month period, children fed at school gained an average of 0.39 kg more than those who did not receive supplementary feeding (Kristjansson etal., There is also evidence showing that iron-rich school meals can improve iron nutrition, especially for adolescent girls (Ruel and Alderman, 2013). In Uganda, according to Adelman etal. ( Including certain types of foods has also enhanced the effectiveness of school-feeding programmes. For example, including biofortified orange-fleshed sweet potato, which is high in betacarotene, into a South African school-feeding programme raised levels of vitamin A intake (van Jaarsveld etal.,