Re: -[Tin] Omega ma^.p ....

On 26 Mar 2006 03:55:51 -0800, "[2Le]" <sir2le@xxxxxxxxx> wrote:

:
:Wonder ingredient not the good oil once touted
:By Adam Cresswell - March 25, 2006
:
:The supposed wonder ingredient fish oil, the much-touted
:omega3 fats, may not be so wondrous after all.
:
:Despite long-standing recommendations that people eat
:more fish, largely for the omega3 fat it contains, a review of
:medical evidence has FAILED to show that people with a
:high omega3 intake live any longer.
:
:Previously, experts had thought consumption of either
:the "long-chain" omega3 fatty acids, found mainly in oily fish,
:or "short-chain" omega3 found in some plant oils, gave
:protection against heart disease. But a review of almost
:90 studies, published online yesterday by the British Medical
:Journal, pooled the results and found no proof that eating
:omega3 cut deaths overall, or reduce the incidence of heart
:attacks, strokes or cancer.
---------------------------------------------------------------------------------------------------------------------
However, they added the findings "do not rule out an important effect
of omega 3 fats",

:-))))))))


***Of the 89 individual studies in the review, 48 were the type of
trials considered to be the most reliable.

http://www.news.com.au/story/0,10117,18591979-36398,00.html

However, even in these the margin of error was wide. Taken together
they appeared to show a 2 per cent reduction in the risk of early
death, but this could mean a 30 per cent reduction in mortality risk,
a 36 per cent increase, or anything in between."


oo0oo

By Lisa Richwine

WASHINGTON (Reuters) - U.S. scientists said on Sunday they had
genetically engineered pigs that make beneficial fatty acids and may
one day serve as a healthier source of pork chops or bacon

The pigs produced omega-3 fatty acids, compounds that have been shown
to improve cardiac function and reduce the risk of heart disease in
people.

The only way now for humans to get omega-3s is through taking dietary
supplement pills or by eating certain fish. Some fish, however, may
have high levels of toxic mercury.

Seeking another source of omega-3s, researchers transferred a worm
gene called fat-1 into pig cells in a laboratory. They used cloning
technology to create embryonic cells that were implanted into the womb
of a normal pig.

The gene produced an enzyme that converted the less desirable omega-6
fatty acids that the pigs naturally produced into omega-3s, the
researchers wrote in the journal Nature Biotechnology.

Tissue from the piglets that were born at the University of
Missouri-Columbia had high levels of omega-3s and less omega-6, the
researchers said. The total amount of fat was the same as in normal
pigs.

The omega-3 pigs "could represent an alternative source as well as be
an ideal model for studying cardiovascular disease and autoimmune
disorders" that also may be impacted by boosting the healthy fat, said
Dr. Yifan Dai, a University of Pittsburgh scientist who transferred
the worm gene into the pig cells.

Too much omega-6 is considered a chief contributor to high rates of
obesity and heart disease, the leading killer of Americans. Experts
encourage higher consumption of omega-3.

Pregnant women are told omega-3s are important for fetal development
but are warned to limit consumption of fish that may be high in
mercury, which can harm a fetus.

"In this case, we think our pigs will help a lot," Dai said.

Whether meat from the omega-3 pigs or other genetically altered
animals will ever reach Americans' dinner plates is uncertain.
Regulators have been debating for years if milk or meat from cloned
animals is safe to consume, and some industry experts wonder if
consumers would embrace it.

Dai said the genetically altered pigs appeared healthy and looked the
same as normal pigs. Researchers will further study the impact of the
extra omega-3.

The pig researchers used the same technology that one member of the
team, Dr. Jing Kang of Massachusetts General Hospital, had previously
used to produce mice that make omega-3s. Other scientists are trying
to make fish, chickens and cows rich in omega-3s.

.

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