Since the beginning of the 20th century, there has been a progressive increase in the Earth's temperature. This warming of the Earth's surface is largely due to the so-called green house effect that can alter the natural behavior of some natural phenomena such as El Niño. Several articles on climate change have been published recently. Some authors have raised the question of whether these changes could affect human health or even lead to the reappearance of some eradicated diseases. This report focuses on the changes seen in health up to date and their probable causes. Some changes in energy emission levels have been proposed in order to restrain this trend.