Is grass fed beef more nutritious than grain fed beef?

All beef provides 14 essential nutrients plus energy. Preliminary studies have shown that grass fed beef has elevated levels of Omega 3 fatty acids and conjugated linoleic acid (CLA). More research is required to determine whether these increased levels are high enough to provide positive health benefits.

I heard that beef takes 3 to 4 days to digest. Is this true?

A cut of beef is mainly made up of water and protein, with smaller amounts of fat and other vitamins and minerals. After we eat, the body is busy working to break down and absorb the nutrients in food. Protein is the main nutrient in beef. Protein is broken down into amino acids in the stomach and then absorbed in the small intestine. This whole process takes only about 4-12 hours. (The fat, vitamins and minerals are also digested within this time frame).