Health Benefits of Grass-Fed Products
Meat, eggs, and dairy products from pastured animals are ideal for your health. Compared with commercial products, they offer you more "good" fats, and fewer "bad" fats. They are richer in antioxidants; including vitamins E, beta-carotene, and vitamin C. Furthermore, they do not contain traces of added hormones, antibiotics or other drugs.
Below is a summary of these important benefits. Following the summary is a list of news bulletins that provide additional reasons for finding a local provider of grass-fed food.
Summary of Important Health Benefits of Grassfed Meats, Eggs and Dairy
Lower in Fat and Calories. There are a number of nutritional differences between the meat of pasture-raised and feedlot-raised animals. To begin with, meat from grass-fed cattle, sheep, and bison is lower in total fat. If the meat is very lean, it can have one third as much fat as a similar cut from a grain-fed animal. In fact, as you can see by the graph below, grass-fed beef can have the same amount of fat as skinless chicken breast, wild deer, or elk.[1] Research shows that lean beef actually lowers your "bad" LDL cholesterol levels.[2]
This page was last updated: May 20, 2008
Beef
Wayne & Janet Brunner
Jacob and Joseph
Arkansaw, Wisconsin
Phone: (715) 285 - MILK
Becky & Josh McMahon
Jordin and Alexandra
A Private Membership Association
Because meat from grass-fed animals is lower in fat than meat from grain-fed animals, it is also lower in calories. (Fat has 9 calories per gram, compared with only 4 calories for protein and carbohydrates. The greater the fat content, the greater the number of calories.) As an example, a 6-ounce steak from a grass-finished steer can have 100 fewer calories than a 6-ounce steak from a grain-fed steer. If you eat a typical amount of beef (66.5 pounds a year), switching to lean grassfed beef will save you 17,733 calories a year—without requiring any willpower or change in your 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 might diminish.
In the past few years, producers of grass-fed beef have been looking for ways to increase the amount of marbling in the meat so that consumers will have a more familiar product. But even these fatter cuts of grass-fed beef are lower in fat and calories than beef from grain-fed cattle.
Extra Omega-3s. Meat from grass-fed animals has two to four times more omega-3 fatty acids than meat from grain- fed animals. Omega-3s are called "good fats" because they play a vital role in every cell and system in your body. For example, of all the fats, they are the most heart-friendly. People who have ample amounts of omega-3s in their diet are less likely to have high blood pressure or an irregular heartbeat. Remarkably, they are 50 percent less likely to suffer a heart attack.[3] Omega-3s are essential for your brain as well. People with a diet rich in omega-3s are less likely to suffer from depression, schizophrenia, attention deficit disorder (hyperactivity), or Alzheimer's disease.[4]
Another benefit of omega-3s is that they may reduce your risk of cancer. In animal studies, these essential fats have slowed the growth of a wide array of cancers and also kept them from spreading.[5] Although the human research is in its infancy, researchers have shown that omega-3s can slow or even reverse the extreme weight loss that accompanies advanced cancer and also hasten recovery from surgery.[6,7]
Omega-3s are most abundant in seafood and certain nuts and seeds such as flaxseeds and walnuts, but they are also found in animals raised on pasture. The reason is simple. Omega-3s are formed in the chloroplasts of green leaves and algae. Sixty percent of the fatty acids in grass are omega-3s. When cattle are taken off omega-3 rich grass and shipped to a feedlot to be fattened on omega-3 poor grain, they begin losing their store of this beneficial fat. Each day that an animal spends in the feedlot, its supply of omega-3s is diminished.[8] The graph below illustrates this steady decline.
When chickens are housed indoors and deprived of greens, their meat and eggs also become artificially low in omega-3s. Eggs from pastured hens can contain as much as 10 times more omega-3s than eggs from factory hens.[9]
It has been estimated that only 40 percent of Americans consume an adequate supply of omega-3 fatty acids. Twenty percent have blood levels so low that they cannot be detected.[10] Switching to the meat, milk, and dairy products of grass-fed animals is one way to restore this vital nutrient to your diet.
The CLA Bonus. Meat and dairy products 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 products contain from three to five times more CLA than products from animals fed conventional diets.[11] (A steak from the most marbled grass-fed animals will have the most CLA ,as much of the CLA is stored in fat cells.)
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. [12] There is new evidence that CLA may also 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. Switching from grain-fed to grassfed meat and dairy products places women in this lowest risk category.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 grain-fed meat and dairy products to get the same level of protection.
Vitamin E. In addition to being higher in omega-3s and CLA, meat from grassfed animals is also 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. [14#] 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.
Why Grassfed Butter Is Better
Because living grass is richer in vitamins E, A, and beta-carotene than stored hay or standard dairy diets, butter from dairy cows grazing on fresh pasture is also richer in these important nutrients. The naturally golden color of grassfed butter is a clear indication of its superior nutritional value. (Searles, SK et al, "Vitamin E, Vitamin A, and Carotene Contents of Alberta Butter." Journal of Diary Science, 53(2) 150-154.)
Two new studies suggest that grassfed meat and dairy products may reduce the risk of breast cancer
CLA (conjugated linoleic acid) is a cancer-fighting fat that is most abundant in grassfed products. Two new European studies link a diet high in CLA with a lower risk of breast cancer. In Finland, researchers measured CLA levels in the serum of women with and without breast cancer. Those women with the most CLA had a significantly lower risk of the disease. Meanwhile, French researchers measured CLA levels in the breast tissues of 360 women. Once again, the women with the most CLA had the lowest risk of cancer. In fact, the women with the most CLA had a staggering 74% lower risk of breast cancer than the women with the least CLA.
The most natural and effective way to increase your intake of CLA is to eat the meat and dairy products of grassfed animals.
(A. Aro et al, Kuopio University, Finland; Bougnoux, P, Lavillonniere F, Riboli E. "Inverse relation between CLA in adipose breast tissue and risk of breast cancer. A case-control study in France." Inform 10;5:S43, 1999)
The more milk a cow produces, the more dilute the vitamin content of her milk
The goal of the commercial dairy industry is to coax the maximum amount of milk out of each cow through a high-tech combination of selective breeding, confinement housing, synthetic hormones, and a high-energy grain diet. It has succeeded admirably. Today's super cows produce as much as 17,000 pounds of milk per cycle—20 times more milk than a cow needs to sustain a healthy calf. Unfortunately for consumers, the cow transfers a set amount of vitamins to her milk, and the greater her milk volume, the more dilute the vitamin content of the milk, especially vitamins E and beta-carotene. According to the journal article cited below, "It follows that continuing breeding and management systems that focus solely on increasing milk and milk fat yield will result in a steady dilution in the milk fat of these vitamins and antioxidants..."
Dairy cows raised on pasture and free of hormone implants produce less milk than commercial cows, but the milk is therefore richer in vitamin content. This is one of those times when less is more.
(Jensen, S. K. "Quantitative secretion and maximal secretion capacity of retinol, beta-carotene and alpha-tocopherol into cows' milk." J Dairy Res 66, no. 4 (1999): 511-22. )
Milk from grassfed cows has hidden benefits
Until recently, all of the experiments demonstrating the cancer-fighting properties of CLA (conjugated linoleic acid) have used synthetic CLA. To see whether the CLA that occurs naturally in cow's milk has similar cancer-fighting properties, researchers recently compared the two. They fed one group of rats butter that was high in CLA and fed another group of rats an equivalent amount of synthetic CLA. As one would expect, the natural CLA proved to be just as effective in blocking tumor growth as the man-made variety. (In both cases, cancer yield was reduced by about 50 percent.) However, the high CLA butter had an added benefit: the rats eating the butter accumulated even more CLA in their tissues than the rats fed an equivalent amount of synthetic CLA. The reason? Researchers believe that the rats were converting another "good" fat found in the butter, trans-vaccenic acid or TVA, into CLA, giving them a second helping of this cancer-fighting fat. (Click here for more information about TVA.)
(Ip, C., S. Banni, et al. (1999). "Conjugated Linoleic Acid-Enriched Butter Fat Alters Mammary Gland Morphogenesis and Reduces Cancer Risk in Rats." J Nutr 129(12): 2135-2142.)
Grassfed meat has a similar fat profile to wild game
When cattle are free to forage on their natural diet of grass, their meat is almost as lean as wild game. The graph below shows that grassfed beef has an overall fat content similar to antelope, deer, and elk.
This second graph shows that grain-fed beef has a much higher ratio of omega-6 to omega-3 fatty acids than wild game or grass-fed beef. A high ratio of omega-6 to omega-3 fatty acids has been linked with an increased risk of cancer, cardiovascular disease, allergies, depression, obesity, and auto-immune disorders. (Simopoulos and Robinson, The Omega Diet, published by HarperCollins in 1999.) A ratio of four or lower is considered ideal. The ratio in grain-fed beef is more than 14 to 1. In grassfed beef, it is approximately two to one.
