Super-food #4. Grass Fed Meats and Wild Caught Salmon - Grass-fed beef and wild caught salmon have more beta-carotene, vitamin E and omega-3 fatty acids than beef produced using conventional cattle-feeding strategies.
Three ounces of ground beef from cattle fed conventional diets contain about 41 micrograms of beta-carotene and a typical rib eye steak has 36 micrograms. In contrast, meat from cattle fattened predominately on ryegrass has almost double the beta-carotene, 87 micrograms in 3.5 ounces of ground beef and 64 micrograms in a steak.
Beta-carotene is converted to vitamin A in the body. Vitamin A is a critical fat-soluble vitamin that is important for normal vision, bone growth, reproduction, cell division and cell differentiation.
In addition, grass fed meats are much higher in Vitamin E. Vitamin E is a fat-soluble vitamin with powerful antioxidant activity. Grass fed cattle exhibit about 3 times as much vitamin E per serving as grain fed beef.
The primary factor in both wild caught fish and grass fed meats is the fat content and the fat ratios. Both have significantly high levels of the essential fatty acid omega 3, which has powerfully positive health effects.
Grazing animals fed an exclusive grass fed diet, as well as wild caught salmon eating their natural diet, significantly alters the fatty acid composition. Cattle fed primarily grass have 60 percent more omega-3 fatty acids and a more favorable omega-6 to omega-3 ratio. Likewise for salmon raised on their natural diet. Omega-3 fatty acids reduce inflammation and help prevent heart disease and arthritis. The essential fatty acids are also highly concentrated in the brain and appear to be particularly important for cognitive and behavioral function.
The meat and milk from grass-fed ruminants are the richest known source of another type of good fat called "conjugated linoleic acid" or CLA. When ruminants are raised on fresh pasture alone, their milk and meat contain as much as five times more CLA than products from animals fed conventional diets.CLA may be one of our most potent defenses against cancer. Also, natural CLA from grass-fed meat and milk has been shown in studies to help build muscle and increase fat loss.