
First off, the growth hormones given to dairy cows,and beef cattle are different. In dairy cows, the controversy centers around recombinant bovine growth hormone (rBGH), a synthetic version of a hormone cows produce naturally. For beef cattle it's steroids, where it all leads is to sick cows, and polluted meat from massive doses of anti-biotic. Beef cattle producers administer a variety of steroid hormones, including natural, and synthetic versions of estrogen, and testosterone to make animals grow faster, convert their food into muscle more efficiently, and make their meat leaner. Synthetic hormones in milk lead to increased levels of a growth factor, known as insulin-dependent growth factor 1(IGF-1) in both milk, and milk products, and meat.



A little history, In 1937, the administration of BST was shown to increase the milk yield in lactating cows by preventing mammary cell death in dairy cattle. Until the 1980s, there was very limited use of the compound in agriculture as the sole source of the hormone was from bovine cadavers. During this time, the knowledge of the structure, and function of the hormone increased. With the advent of biotechnology, one of the pioneering biotech companies, Genentech succeeded in cloning the gene for BST. Monsanto had working along the same lines, and struck a deal with Genentech in 1979 to license Genentech's patents and, collaborate on development of a recombinant version of BST. The two companies used genetic engineering to clone the rBST gene into E. coli. The bacteria are grown in bio-reactors. Then they're broken up, and separated from the rBST. Which is purified to produce the injectable hormone. FDA approved Monsanto's application in 1993. Monsanto launched rBST, brand-named Posilac, in 1994. A 2007 USDA Dairy Survey estimated rBGH use at 15.2% of operations and 17.2% of cows.
In September 2010, the United States Court of Appeals, Sixth Circuit Court, analyzing evidence submitted in briefs, found that there is a "compositional difference" between milk from rBGH treated cows, and milk from untreated cows. The court revealed that milk from rBGH treated cows has: increased levels of IGF-1, higher fat, and lower protein content. Today there is a very well established correlation between abnormally high levels of circulating IGF-1 and the development and growth of human cancers. Although IGF-1 occurs normally in the milk of both humans and cows, we as consumers have been concerned about massively elevated levels of bovine IGF-1 in milk, and meat treated with rBGH. Regulatory bodies in several countries, such as the EU, Canada, Japan, Australia, and New Zealand have all rejected Monsanto's application to sell rBST.
Here are some companies you can trust when it comes to rGBH, in response to concerns from consumers and advocacy groups about milk from cows treated with rBST, some dairies, retailers, and restaurants have published policies on use of rBST in production of milk products they sell, while others offer some products or product lines that are labelled "rBST free".
- Costco has no overall rBST policy, but sells brands, such as "Kirkland", with labels pledging that no rBST was used in milk production.
- Wal-Mart announced in March 2008 that its private label Great Value milk will be "sourced exclusively from cows that have not been treated with artificial growth hormones like recombinant bovine somatotropin (rbST)"
- Kroger announced "it will complete the transition of milk it processes and sells in its stores to a certified rBST-free supply by February 2008."
- Dean Foods has no overall rBST policy, but has brands, such as "Oak Farms", with labels pledging that no rBST was used in milk production.
- Winder Farms, a home delivery dairy and grocer in Utah and Nevada, sells milk from rBST-free cows.
- Guernsey Farms, a dairy farm and distributor located in Northville, Michigan sells and distributes rBST-free dairy products in Southeastern Michigan. Its milk has been labeled rBST free for a number of years.
- Safeway in the northwestern United States stopped buying from dairy farmers that use rBST in January 2007. The two Safeway plants produce milk for all Safeway stores in Oregon, Southwest Washington, and parts of northern California. Safeway's plant in San Leandro, California had already been rBST-free for two years.
- Chipotle Mexican Grill announced in June 2012 that it will serve rBST-free sour cream at its restaurants.
- Publix, a supermarket chain, states on its website: "Publix milk is rbST-free. (No added artificial hormones.) However, the FDA has stated that no significant difference has been shown between milk derived from rbST-treated and non-rbST-treated cows"
- Braum's, a dairy and ice cream retailer in the midwest with a private herd, says on its website that it does not administer rBST to its cows.
- Starbucks website, as of August 2012, has no statement about use of milk from cows treated with rBST. For example, its Animal Welfare policy is silent on the issue. However it announced in January 2008 that it would no longer sell milk from cows treated with rBST in its stores in the US. The Organic Consumers Association, an advocacy group, claimed that Starbucks' change was due to their advocacy work.
- Ben & Jerry's ice cream uses milk and cream from dairy farms that have pledged not to use rBST.
- Tillamook County Creamery Association, a co-operative made up of 110 dairy farms, indicates on its website that its cows are not treated with hormones.
Please patronize these companies because when it comes to food additives they care about your health.
The Center For Food Safety states:

Factory cattle farms who use rBGH, and antibiotics to grow their cattle also pose a major threat to the viability of small organic cattle, and dairy farms. While rBGH enriches Monsanto, it exposes consumers to dangers, without any benefits. So once again we see mega factory farm organizations like Monsanto with a strong Washington lobby controlling public policy much to the determent of the of the beef eaters in the USA. While the congressmen, and women they've bought line their pockets with gold. Paid for by the health miseries of the unsuspecting consumers who believe that someone is looking out for them, and their families nutritional health interest's.

Detecting Hormones In Your Milk
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