Nausea (and vomiting) can be psychological or physical in origin. It can originate from problems in the brain or organs of the upper gastrointestinal tract (esophagus, stomach, small intestine, liver, pancreas, and gallbladder).
The fireside chats of President Franklin Delano Roosevelt were an important means for the president to inform the public about his programs and to allay their fears of the mounting problems caused by the Great Depression. The fireside chats were radio addresses given by the president during the 1930s. Continue Reading.
When FDR said his famous line, he was trying to restore order and trust. He launched his New Deal campaign and part of this was to get citizens trusting banks again so that they could become functional. By panicking, America would get nothing done. FDR wanted everyone to get up, get back to work and get back on track. The first step to this was calming everyone down. The biggest hurdle they would have to jump on the way to recovery was people's fear - which is why FDR said that fear was the only thing you should fear, or worry about.