There’s a steadily growing body of science on the connection between fracking and human health, according to a new analysis published by a group of scientists and doctors on Thursday.

In 2014, there were only 400 peer-reviewed studies on the health impacts of fracking, the report notes. Now, in 2019, the group had almost 1,800 studies to analyze, more than half of which have been published since 2016.

During his State of the Union address, President Donald Trump exclaimed that the “war on American Energy” had ended and that “we are now an exporter of energy to the world.”