An important part of the spread and popularization of American groundnut consumption in Japan has been the efforts of Dr. Kiyochika Hoshikawa to promote the cultivation of this crop in Japan, and the flurry of scientific articles on the health benefits of eating American groundnut tubers. Japanese websites that sell American groundnut continue to emphasize its health benefits in their marketing efforts. There are reports of American groundnut cultivation in South Korea as well, where it is grown for its nutritional benefits.