Growth slowed in some U.S. regions during May as costlier food and energy as well as supply disruptions stemming from Japan's earthquake took a toll, the Federal Reserve said on Wednesday.

Reports from the 12 Fed districts indicated that economic activity generally continued to expand since the last report, though a few districts indicated some deceleration, the U.S. central bank's periodic Beige Book summary said.

The report on coast-to-coast conditions was prepared by the New York regional Fed bank and was based on conditions on or before May 27.

(Reporting by Glenn Somerville; Editing by Andrea Ricci)