Dietary Protein and Serum Cholesterol in Rats

SummaryIncreasing the protein content of the diets of groups of rats on a normally hypercholesterolemic regimen (cholesterol plus cholic acid) caused a progressive drop in serum cholesterol values. This observation held true when either casein or Drackett protein was used. All diets except one contained added choline chloride. Animals on the cho-line-free diet had lower serum cholesterol levels and higher liver cholesterol levels than a comparable choline-fed group.