U.S. consumer sentiment tumbled to a nine-month low in April, with Americans especially gloomy about the long-term health of the economy, a survey released on Friday showed.

The Thomson Reuters/University of Michigan's preliminary reading on the overall index of consumer sentiment fell to 72.3 in April, a level last seen in July, 2012, and below economists' forecasts of 78.5. The index stood at 78.6 last month.