Natural fatty acids may be saturated or unsaturated, and as the following data indicate, the saturated acids have higher melting points than unsaturated acids of corresponding size. The double bonds in the unsaturated compounds listed on the right are all cis (or Z).
My best diet is Basically organic veggies, veggie juice and organic meats. No processed food at all. No fruit juice, no artificial sweetners. No sugar, caffene, wheat, processed grains (whole grains are fine). Only occassional fresh fruit, don't let it become a sugar substitute.
I have seen many recommendations for diets...Some good ...Some bad. Russian Tortoises are grazers and enjoy broad leaf plants. The best diet is a variety of weeds (leaves and flowers). Dandelion is a favorite. However for many , the ideal diet is just not available.