On Tuesday I posted about the benefits of using Ghee in place of butter.  What I failed to point out was the importance of choosing the most beneficial kinds on the market – the ones that come from “grass-fed” cows. (It was noted that butter and ghee that come from grass-fed cows are rich in healthful omega-3’s but it wasn’t made clear that you should buy only that one).  You should and I’ll tell you why!  Below are four nutritious foods (some of my favourites like salmon and popcorn) that may be more harmful than beneficial if you don’t choose them carefully.

Joel Salatin, co-owner of Polyface Farms and author of half a dozen books on sustainable farming, gives us the scoop:

The problem: Cattle evolved to eat grass, not grains. But farmers today feed their animals corn and soybeans, which fatten up the animals faster for slaughter. But more money for cattle farmers (and lower prices at the grocery store) means a lot less nutrition for us. A recent comprehensive study conducted by the USDA and researchers from Clemson University found that compared with corn-fed beef, grass-fed beef is higher in beta-carotene, vitamin E, omega-3s, conjugated linoleic acid (CLA), calcium, magnesium, and potassium; lower in inflammatory omega-6s; and lower in saturated fats that have been linked to heart disease. “We need to respect the fact that cows are herbivores, and that does not mean feeding them corn and chicken manure,” says Salatin.

The solution: Buy grass-fed beef, which can be found at specialty grocers, farmers’ markets, and nationally at Whole Foods. It’s usually labeled because it demands a premium, but if you don’t see it, ask your butcher.

Budget tip: Cuts on the bone are cheaper because processors charge extra for deboning. You can also buy direct from a local farmer, which can be as cheap as $5 per pound. To find a farmer near you, search eatwild.com.

Rick North, project director of the Campaign for Safe Food at the Oregon Physicians for Social Responsibility and former CEO of the Oregon division of the American Cancer Society, gives us the scoop:

The problem: Milk producers treat their dairy cattle with recombinant bovine growth hormone (rBGH or rBST, as it is also known) to boost milk production. But rBGH also increases udder infections and even pus in the milk. It also leads to higher levels of a hormone called insulin-like growth factor in milk. In people, high levels of IGF-1 may contribute to breast, prostate, and colon cancers. “When the government approved rBGH, it was thought that IGF-1 from milk would be broken down in the human digestive tract,” says North. As it turns out, the casein in milk protects most of it, according to several independent studies. “There’s not 100% proof that this is increasing cancer in humans,” admits North. “However, it’s banned in most industrialized countries.”

The solution: Check labels for rBGH-free, rBST-free, produced without artificial hormones, or organic milk. These phrases indicate rBGH-free products.

Budget tip: Try Wal-Mart’s Great Value label, which does not use rBGH.

David Carpenter, MD, director of the Institute for Health and the Environment at the University at Albany and publisher of a major study in the journal Science on contamination in fish, gives us the scoop:

The problem: Nature didn’t intend for salmon to be crammed into pens and fed soy, poultry litter, and hydrolyzed chicken feathers. As a result, farmed salmon is lower in vitamin D and higher in contaminants, including carcinogens, PCBs, brominated flame retardants, and pesticides such as dioxin and DDT. According to Carpenter, the most contaminated fish come from Northern Europe, which can be found on American menus. “You could eat one of these salmon dinners every 5 months without increasing your risk of cancer,” says Carpenter, whose 2004 fish contamination study got broad media attention. “It’s that bad.” Preliminary science has also linked DDT to diabetes and obesity, but some nutritionists believe the benefits of omega-3s outweigh the risks. There is also concern about the high level of antibiotics and pesticides used to treat these fish. When you eat farmed salmon, you get dosed with the same drugs and chemicals.

The solution: Switch to wild-caught Alaska salmon. If the package says fresh Atlantic, it’s farmed. There are no commercial fisheries left for wild Atlantic salmon.

Budget tip: Canned salmon, almost exclusively from wild catch, can be found for as little as $3 a can.

Olga Naidenko, PhD, a senior scientist for the Environmental Working Group, gives us the scoop:

The problem: Chemicals, including perfluorooctanoic acid (PFOA), in the lining of the bag, are part of a class of compounds that may be linked to infertility in humans, according to a recent study from UCLA. In animal testing, the chemicals cause liver, testicular, and pancreatic cancer. Studies show that microwaving causes the chemicals to vaporize—and migrate into your popcorn. “They stay in your body for years and accumulate there,” says Naidenko, which is why researchers worry that levels in humans could approach the amounts causing cancers in laboratory animals. DuPont and other manufacturers have promised to phase out PFOA by 2015 under a voluntary EPA plan, but millions of bags of popcorn will be sold between now and then.

The solution: Pop natural kernels the old-fashioned way: in a skillet or use an air popping machine. For flavorings, you can add real butter or dried seasonings, such as dillweed, vegetable flakes, or soup mix.

Budget tip: Popping your own popcorn is dirt cheap.

Taken from Prevention.com