Over-nutrition is an unfortunate term and should be replaced with something that considers different causes of obesity. In southern African urban areas among others it has been established that the urban poor are food insecure due to lack of dietary diversity and reliance on sugars and starches -- foods that are promoted throughthe corporate food industry and promte obesity. Fresh foods at a reasonable price are less available to the urban food insecure.
On the other hand it has also been shown by research that consumption of animal sourced foods (ASF) among urban dwellers promotes child health and that therefore the keeping of livestock is a practice that should be encouraged, including among urban populations which are vulnerable to food insecurity and poor health. ASF help in providing zinc to the diet which contributes to prevention of infections through better immune response. This includes dairy products such as milk and eggs, as well as meat.
Diana Lee-Smith