Well, the sugar industry, the seed oil industry, and the breakfast food industry come to mind.
The Kellogg brothers were Seventh-Day Adventists, strongly influenced by Ellen White, who believed that eating meat stimulated men’s fleshly lusts, and who therefore recommended vegetarianism to her followers. Ancel Keys and several of his friends were paid to do research by the sugar industry. It was Crisco that put the American Heart Association on the map, with a large donation in 1948, and in return, the AHA has promoted the wonders of “heart-healthy” seed oils ever since.