Fuel-saving stoves have many advantages. They save wood resources, time, money, and improve health conditions by reducing fumes in homes. Foods that are not adequately cooked can transmit food-borne diseases. Families that cannot purchase sufficient fuel might be even unable to consume their food. Farmers can increase household incomes by building and selling the fuel-saving stoves they build. Compared to traditional stoves the energy-saving stoves reduce deforestation, since they use a third of the fuel. Therefore they decrease smoke from cooking, thus diminish respiratory problems. Many African families cook on open fire, which uses lots of wood and creates unhealthy smoke, causing respiratory problems. Traditional open-air stoves are fuel consuming and slow in reaching appropriate cooking temperatures. The energy-saving stoves improve food processing and provide a good heat source in cool areas.