Demand for lean cuts of beef is rising in Japan as consumers become increasingly health-conscious.

"When I find savory-looking lean beef at a supermarket, I cannot resist buying it," Yukiko Otsuka, a 40-year-old housewife in Yokohama said.

"As the fat content of lean beef is low, my husband, 6-year-old son and even 2-year-old daughter eat it so much," she said.