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What You Need to Know About Farmed Fish

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Declining ocean fish stocks have led to a rapid growth in fish farming. But if you think farmed fish are the answer, you might want to take a second look at its effects.

Carnivorous farmed fish are fed on high levels of fish meal and fish oil. In fact, they require a fish biomass input greater than the fish biomass produced. For the 10 species of fish most commonly farmed, an average of nearly two kilograms of wild fish is required for every one kilogram of fish raised.

Unfortunately, there is an increase in the production trend of carnivorous fish (such as salmon or shrimp) rather than herbivorous or filter feeder fish. Small pelagic fish, such as herring, sardines and anchovies, mainly provide the fish meal and fish oils used for aquaculture feed, increasing pressures on wild fish.

Numbers of popular species such as cod have plummeted; in the Mediterranean, 12 species of shark are commercially extinct. Swordfish in that area, which should grow as thick as a telephone pole, now must be caught as juveniles and eaten when no bigger than a baseball bat. The fish in the seas surrounding Africa and Asia are also in steep decline.

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Categories
Ailmemts & Remedies

Cataracts

Although half the people over age 50 and three-quarters of those over age 75 develop cataracts, the condition isn’t an inevitable part of aging. Recent studies show that certain lifestyle strategies can lessen your chance of developing this serious but treatable vision disorder….

Symptoms
Gradual and painless blurring or dimming of vision.
Increased sensitivity to sun glare or car headlights at night
Seeing halos around lights
Changes in color perception………..CLICK & SEE

When to Call Your Doctor
If you begin to develop cataract symptoms.
Reminder: If you have a medical condition, talk to your doctor before taking supplements.

What It Is
The eye‘s lens is normally transparent; it refracts and focuses light on the retina, which allows a clear image to form. When the proteins in the lens break down, they clump together and form opaque spots called cataracts. These spots hinder light from being transmitted properly to the retina, and vision becomes cloudy or blurry. The degree of impaired vision depends on the cataract’s size, density, and location on the lens.

What Causes It
Cataracts may develop as a result of age-related body changes; but some experts now think that the majority of cases can be attributed to smoking or to lifetime exposure to ultraviolet (UV) light from the sun. A low level of antioxidants (vitamins C and E, beta-carotene, and selenium) may also be a factor. These compounds can squelch free radicals — unstable oxygen molecules — that can damage the lens. (Normally, the lens has a high concentration of glutathione, an antioxidant produced by the body.) In addition, having diabetes or being overweight increases the risk of cataracts, probably because high levels of sugar (glucose) in the blood contribute to the destruction of lens proteins. Injury to the eye can cause cataracts too.

How Supplements Can Help
Taking supplements before a cataract appears may postpone its development or prevent it altogether. In the early stages of a cataract, supplements may slow its growth. Only surgery will remove a cataract, however.

What Else You Can Do

Quit smoking.
Protect your eyes from UV rays by wearing sunglasses and a wide-brimmed hat when outdoors
Eat plenty of fresh fruits and vegetables; they’re good sources of antioxidants.

Supplement Recommendations

Vitamin C
Vitamin E
Selenium
Bilberry
Ginkgo Biloba
Alpha-lipoic Acid
Grape Seed Extract
Flaxseed Oil

Vitamin C
Dosage: 1,000 mg twice a day.
Comments: Reduce dose if diarrhea develops.

Vitamin E

Dosage: 400 IU a day.
Comments: Check with your doctor if taking anticoagulant drugs.

Selenium
Dosage: 400 mcg a day.
Comments: Don’t exceed 600 mcg daily; higher doses may be toxic.

Bilberry
Dosage: 80 mg 3 times a day.
Comments: Standardized to contain 25% anthocyanosides. May be included in nutritional supplement eye formulas.

Ginkgo Biloba

Dosage: 40 mg 3 times a day.
Comments: Standardized to have at least 24% flavone glycosides.

Alpha-lipoic Acid

Dosage: 150 mg a day.
Comments: Take in the morning with or without food.

Grape Seed Extract
Dosage: 100 mg twice a day.
Comments: Standardized to contain 92%-95% proanthocyanidins.

Flaxseed Oil

Dosage: 1 tbsp. (14 grams) a day.
Comments: Can be mixed with food; take in the morning.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.

Source:Your Guide to Vitamins, Minerals, and Herbs (Reader’s Digest)

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News on Health & Science

Free or Farmed, When Is a Fish Really Organic?

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Buying a pork chop labeled   organic  is relatively straightforward: it comes from a pig that ate only organic food, roamed outdoors from time to time and was left free of antibiotics

But what makes a fish organic?

That is a question troubling the Agriculture Department, which decides such things. The answer could determine whether Americans will be able to add fish to the growing list of organic foods they are buying, and whether fish farmers will be able to tap into that trend and the profits that go with it.

Organic foods, which many people believe to be more healthful (though others scoff), are grown on farms that shun chemicals and synthetic fertilizers and that meet certain government standards for safeguarding the environment and animals.

An organic tomato must flourish without conventional pesticides; an organic chicken cannot be fed antibiotics. Food marketers can use terms like “natural” and “free range” with some wiggle room, but only the Agriculture Department can sanction the “organic” label.

To the dismay of some fishermen — including many in the Alaskan salmon industry — this means that wild fish, whose living conditions are not controlled, are not likely to make the grade. And that has led to a lot of bafflement, since wild fish tend to swim in pristine waters and are favored by fish lovers.

“If you can’t call a wild Alaska salmon true and organic,” asked Senator Lisa Murkowski,a Republican from Alaska, “what can you call organic?”

Instead, it appears that only farm-raised salmon may pass muster, as may a good number of other farm-raised fish — much to the delight of fish farmers.

But a proposed guideline at the Agriculture Department for calling certain farmed fish “organic” is controversial on all sides. Environmentalists argue that many farm-raised fish live in cramped nets in conditions that can pollute the water, and that calling them organic is a perversion of the label. Those who catch and sell wild fish say that their products should be called organic and worry that if they are not, fish farmers will gain a huge leg up.

Even among people who favor the designation of farmed fish as organic, there are disputes over which types of fish should be included.

Trying to define what makes a fish organic  is a strange concept,  said George H. Leonard, science manager for the Seafood Watch Program at the Monterey Bay Aquarium, which offers a consumer guide to picking seafood.   The more you look at it, particularly for particular kinds of fish, it gets even stranger.

The issue comes down largely to what a fish eats, and whether the fish can be fed an organic diet. There is broad agreement that the organic label is no problem for fish that are primarily vegetarians, like catfish and tilapia, because organic feed is available (though expensive).

Fish that are carnivores   salmon, for instance    are a different matter because they eat other fish, which cannot now be labeled organic.

The Agriculture Department panel that recommended adding farmed fish to the organic roster was willing to work around the issue, and offered various ways that fish-eating fish could qualify.

But those work-arounds have infuriated some environmentalists, who take issue with the idea that a fish could be called organic if it ate meal made from wild nonorganic fish. This constituency complains, among other things, that demand for fish meal is depleting wild fisheries.

When it comes to carnivorous fish, it seems to be a complete deception of what organic means,  said Andrea Kavanagh, director of the Pure Salmon Campaign, an advocacy group working to improve conditions for farm-raised fish.   Organic is supposed to be on 100 percent organic feed.

As the purists balk, the market for organic foods grows. Consumer sales reached $13.8 billion in 2005 compared with $3.6 billion in 1997, according to the Organic Trade Association. What started as a farming technique for crops has expanded into everything from processed foods to flowers and cosmetics. There was even a federal task force to evaluate organic pet food.

Fish farmers and retailers are painfully aware of what they are missing, and some of them are taking matters into their own hands. As things stand, a limited amount of seafood is being sold as organic at stores in the United States, usually because it was certified by other countries or by third-party accreditation agencies.

A company in Florida called OceanBoy Farms is selling what it says are organic shrimp to Wal-Mart, Costco and some other retailers. And at the Lobster Place, a seafood store in Manhattan,   organic   king salmon from New Zealand is offered for $13.50 a pound, compared with $22.95 for wild king salmon and $9.95 for farm-raised salmon.
Should wild fish receive an organic label? Or should it be reserved for farm-raised fish?

People will go for organic salmon when wild king salmon isn’t available,   said Todd Harding, director of wholesale operations for the Lobster Place. He said that the taste of organic salmon was more consistent, but that he generally preferred wild salmon.

While most consumers say they prefer wild-caught fish, 72 percent would buy organic fish at least some of the time, according to a recent survey by the New Jersey Department of Agriculture and Rutgers.

If the Agriculture Department ultimately approves organic fish, it would certainly complicate the debate about what types of seafood are best in terms of taste, nutrition, price and environmental impact. Farm-raised? Wild-caught? Or farm-raised organic?

There is plenty of history to the debate. In 2000, when the Agriculture Department sought to weed out some of the food industry’s murkier organic claims, it named a task force to evaluate requests from fish farmers for organic eligibility.

The farmers argued, then as now, that with demand for seafood growing and many wild fisheries being depleted, farm-raised seafood should have a competitive edge. On farms, they said, the number of fish remains stable, and the quality of water and feed are controlled.

One thing the task force did was rule out the possibility that wild fish could be labeled organic.

It takes some thinking about,  said Rebecca J. Goldburg, a senior scientist at the advocacy group Environmental Defense, who was on the advisory panel.   What it comes down to is organic is about agriculture, and catching wild animals isn’t agriculture.

The task force recommended that farm-raised fish could be labeled organic as long as their diets were almost entirely organic plant feed.

The Agriculture Department shelved those recommendations and let the issue lie fallow. In 2005 a second task force was convened — this time, with more members affiliated with the aquaculture industry.

This year, the group recommended far less stringent rules, including three options for what organic fish could eat: an entirely organic diet; nonorganic fish during a seven-year transition period while fish farms shift to organic fish meal; or nonorganic fish meal from   sustainable  fisheries. Sustainable fisheries are those that ensure that their fish stocks do not become depleted.

Even if the recommendations are adopted, it will still take several years before U.S.D.A.-certified organic fish appears in stores or restaurants. But domestic fish farmers say that new rules cannot come soon enough. While the aquaculture industry has experienced rapid growth, the vast majority of it has been overseas    mainly in China   and much of the growth in seafood sales in the United States, which had a wholesale value of $29.2 billion in 2004, has come from imports.

Rodger May, a Seattle businessman who sells wild and farm-raised salmon, is preparing for the day when he can sell his fish as organic. For now he refers to some of his farm-raised salmon  which live in ocean pens, as opposed to man-made ponds    as   natural,  a designation that does not carry the same marketing punch as would   organic.

Mr. May says he believes that he has created the perfect environment for organic fish. His  natural   fish are raised in pens that hold fewer fish than those for his regular farm-raised salmon, and they live in a body of water where fast-moving currents constantly provide fresh water and flush away waste.

His fish eat a mixture of oily brown pellets that resemble dog food and contain protein in the form of ground-up fish; other farm-raised salmon are fed protein from chicken and other land animals, he said.

How can a wild fish be cleaner than one of these?   he asked.    What can be more organic than something that comes out of the sea, that has no chemicals near it, no antibiotics and is fed fish?

The Agriculture Department may ultimately agree with Mr. May. But even if it does, it could then face another round of difficult questions. For instance, what is an organic clam? An oyster? A scallop?

“How do you make conventional mollusk production different from organic mollusk production?” asked Ms. Goldburg, the Agriculture Department panelist, who noted that mollusks filter water for food. They are all just sucking up water. Is it cleaner water.

Source:  The New York Times

Categories
Healthy Tips

Fish eating

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FISH and other SEAFOOD can play an important role in a good diet. Because fish are high in protein but low in unhealthy fats, they make a great alternative to red meat. Fish are a good source of vitamins and minerals Fish has an excellent source of omega-3 fatty acids, which may protect against coronary heart disease and stroke, and are thought to aid in the neurological development of unborn babies,” said Joshua Cohen, lead author and senior research associate at the Harvard Center for Risk Analysis at HSPH.

CLICK & SEE

It is recomended that eating fish(particularly fatty fish) atleast two times a week is very good for health. Fatty fish like mackerel, lake trout, herring, sardines, albacore tuna and salmon are high in two kinds of omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).

Two new studies give one more reason to eat a diet rich in fish: prevention of age-related macular degeneration, the leading cause of blindness in old age .

Even though the world’s fish contain slight amounts of mercury, eating lots of fish carries no detectable health risk from low levels of the substance, even for very young children and pregnant women, concludes the most comprehensive study of the subject yet.

The findings come from a nine-year University of Rochester study conducted in the Republic of the Seychelles, an island nation in the Indian Ocean where most people eat nearly a dozen fish meals each week and whose mercury levels are about 10 times higher than most U.S. citizens. Indeed, no harmful effects were seen in children at levels up to 20 times the average U.S. level. The work is published in the August 26 issue of the Journal of the American Medical Association 2005.

Who should choose their fish carefully?
Too much mercury and PCBs can cause health problems for anyone. Because they alter the way young brains develop, these pollutants can harm babies and children most of all. Both mercury and PCBs linger in the body and build up over time. They can pass from a pregnant woman or a nursing mother to her baby.

It’s especially important for all children under 15, teenage girls, and women who are pregnant or could get pregnant to avoid eating fish that have high levels of mercury or PCBs

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