 These health effects include premature death, acute respiratory illness, aggravated asthma, chronic bronchitis and decreased lung function.The poor, undernourished, very young and very old, and people with preexisting respiratory disease and other ill health, are more at risk.In 2014, the global energy industry revenue was about US$8 trillion, with about 84% fossil fuel, 4% nuclear, and 12% renewable (including hydroelectric).