Grassfed/Grass finished beef is natural beef and a major source of Omega 3 fats. In switching from grainfed to grassfed meat, we are simply returning to the diet of our long-ago ancestors, the diet that is most in harmony with our physiology. Every cell and every system of our bodies will function better when we eat products from animals raised on grass.
Grassfed beef is naturally leaner than grain-fed beef. In fact, grassfed products are rich in all the fats now proven to be health-enhancing, but low in the fats that have been linked with disease. Omega 3s in beef that feed on grass is 7% of the total fat content, compared to 1% in grain-only fed beef. Grassfed beef has the recommended ratio of omega 6 to omega 3 fats (3:1.)
A 6-ounce steak from a grass-finished steer has almost 100 fewer calories than a 6-ounce steak from a grainfed steer.
If you eat a typical amount of beef (66.5 pounds a year), switching to grassfed beef will save you 17,733 calories a year—without requiring any willpower or change in eating habits. If everything else in your diet remains constant, you’ll lose about six pounds a year. If all Americans switched to grassfed meat, our national epidemic of obesity would begin to diminish.
The CLA Bonus The meat and milk from grassfed 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.
In laboratory animals, a very small percentage of CLA — a mere 0.1 percent of total calories —greatly reduced tumor growth.13 Researcher Tilak Dhiman from Utah State University estimates that you may be able to lower your risk of cancer simply by eating the following grassfed products each day: one glass of whole milk, one ounce of cheese, and one serving of meat. You would have to eat five times that amount of grainfed meat and dairy products to get the same level of protection.
There is new evidence suggesting that CLA does reduce cancer risk in humans.
In a Finnish study, women who had the highest levels of CLA in their diet, had a 60 percent lower risk of breast cancer than those with the lowest levels of CLA.
Switching from grainfed to grassfed meat and dairy products places women in this lowest risk category.14 Vitamin E In addition to being higher in omega-3s and CLA, meat from grassfed animals is higher in vitamin E.
The graph below shows vitamin E levels in meat from: 1) feedlot cattle, 2) feedlot cattle given high doses of synthetic vitamin E (1,000 IU per day), and 3) cattle raised on fresh pasture with no added supplements. The meat from the pastured cattle is four times higher in vitamin E than the meat from the feedlot cattle and, interestingly, almost twice as high as the meat from the feedlot cattle given vitamin E supplements.15
In humans, vitamin E is linked with a lower risk of heart disease and cancer. This potent antioxidant may also have anti-aging properties. Most Americans are deficient in vitamin E.