Effect of meat-based diets on the body weight gain of female F344 rats. Panel H shows the mean weight of 5 groups of 10 rats given high-meat and high-fat diets containing 60% cooked freeze-dried beef, chicken or bacon, or 28% olive oil or lard. Panel L shows the weigh rats given low-meat and low-fat diets containing 30% beef, chicken or bacon, or 14% olive oil or lard. Standard deviation bars are shown only for lightest and heaviest groups in each panel.