Epidemiologist Manuel Franco describes the Special Period as "the first, and probably the only, natural experiment, born of unfortunate circumstances, where large effects on diabetes, cardiovascular disease and all-cause mortality have been related to sustained population-wide weight loss as a result of increased physical activity and reduced caloric intake In 2007, Cuba announced that it has undertaken computerizing and creating national networks in blood banks, nephrology and medical images. Cuba is the second country in the world with such a product, only preceded by France. Cuba is preparing a computerized health register, hospital management system, primary health care, academic affairs, medical genetic projects, neurosciences, and educational software. The aim is to maintain quality health service free for the Cuban people, increase exchange among experts and boost research-development projects. An important link in wiring process is to guarantee access to Cuba's Data Transmission Network and Health Website (INFOMED) to all units and workers of the national health system.