copio e incollo
> Beef 'n' Butter
>
> Health Sciences Institute e-Alert
>
> April 20, 2004
>
> **************************************************************
>
> Dear Reader,
>
> Is it possible to prevent cancer AND reduce body fat by
> eating plenty of ground beef and butter?
>
> It just might be, provided it's the right kind of beef and
> the right kind of butter. The key to this potential cancer
> prevention is a fatty acid called conjugated linoleic acid
> (CLA) found in meat and dairy products. But CLA supplements
> may also help reverse existing atherosclerosis, decrease
> progression of osteoporosis, and has been shown to aid in
> the management of glucose and insulin levels as well.
>
> So is CLA some kind of super supplement? At this point, it's
> too early to say for sure. But there's something going on
> here that would seem to be very beneficial to overall
> health. And as several HSI members have found, CLA may
> provide a welcome boost when it comes to getting rid of
> excess body fat, especially in the abdominal area.
>
> --------------------------------------------------------------
> The burger factor
> --------------------------------------------------------------
>
> CLA is part of the omega-6 fatty acid family. And while the
> typical diet supplies more than enough omega-6, the
> mechanism of CLA's action apparently mimics that of omega-3
> fatty acids.
>
> In the November 2000 issue of his Nutrition and Healing
> newsletter, Jonathan V. Wright, M.D., writes that even
> though CLA was discovered in the 1930s, it wasn't properly
> researched until the 1980s when it was identified as an
> anticarcinogenic factor in fried ground beef. Since then,
> the majority of CLA research - and there's been quite a bit -
> has been conducted on animals with very promising results.
>
> In addition to the health benefits mentioned above, studies
> also show that CLA may be a very effective tool in managing
> body fat.
>
> --------------------------------------------------------------
> Exchanging fat for muscle
> --------------------------------------------------------------
>
> In 2000, a Norwegian study followed 60 overweight or obese
> subjects while they took different daily dosages of a CLA
> supplement or placebo. After 12 weeks, researchers found
> significantly greater reduction in body fat mass (BFM) among
> subjects who took either 3.4 grams of CLA daily, or 6.8
> grams daily, compared to the group that took placebo. The
> data showed that CLA doses less than 3.4 grams were
> ineffective in reducing BFM.
>
> In another CLA study conducted at Maastricht University in
> The Netherlands in 2003, researchers examined the effects of
> CLA supplementation on 54 overweight subjects. For 13 weeks,
> subjects received 1.8 grams of CLA each day, 3.6 grams per
> day, or a placebo. Researchers found that among the CLA
> subjects, feelings of fullness and satiety were increased,
> while feelings of hunger decreased, compared to subjects
> taking placebo.
>
> And in a 2000 study from the University of Wisconsin-
> Madison, researchers found that when subjects taking CLA
> regained weight, they were more likely to regain it as
> muscle and not fat.
>
> These results are reflected in comments posted by HSI
> members in an HSI Forum thread titled "CLA." For instance, a
> member named Sunshinemar1 writes that he took one gram of
> CLA daily for about a year. He says, "My loss was very slow
> but I lost inches in the mid section which is the hardest
> fat to lose. Lost more in inches than in weight loss.
> I'm sure if I took one with each meal the results
> would have been much better".
>
> A member named Cork says she began taking CLA to help
> prevent a recurrence of breast cancer. She writes, "As a
> welcome side effect, I have lost about 18 pounds and have
> more stamina for exercise. The weight loss was quite
> gradual. I'm sure I've lost more than 18 pounds of fat and
> have gained muscle because I have gone from size 16 jeans to
> size 10."
>
> Note that Cork effectively combined exercise with her CLA
> regimen, as did a member named Cindy who says that although
> her fat loss has been gradual, she's convinced the CLA has
> helped. She writes, "Since adding the CLA I notice changes
> every week. Anybody who knows about losing body fat knows
> that it is a very gradual process. It's much easier to put
> it on than take it off."
>
> --------------------------------------------------------------
> Food for thought
> --------------------------------------------------------------
>
> Whether you take CLA to help shed body fat, or as Cork did,
> to improve the odds in a fight against cancer, you can
> increase your intake of CLA through dietary sources, or by
> taking supplements.
>
> Good amounts of CLA can be found in butter, beef and whole
> milk, but only when these foods come from grass-fed cattle.
> When cattle are fed grain and hay the CLA content drops. And
> as I've addressed in previous e-Alerts, for optimum health,
> raw unpasteurized milk is always far preferable to the
> pasteurized milk you'll find on most grocery shelves.
>
> As for supplements, Dr. Wright recommends that his patients
> take 2 to 4 grams of CLA daily, but cautions that because
> CLA has not yet been researched extensively enough in
> humans, the possible side effects of higher doses are
> unknown. And if you do take the supplement route, you should
> also be sure to take a broad range of other fatty acids. For
> this, Dr. Wright suggests flaxseed oil, which contains a
> majority of omega-3 fatty acids, but also omega-6 and omega-9
> fatty acids. In addition, vitamin E (as alpha-tocopherol
> along with other tocopherols) should be taken with any fatty
> acid supplement to help keep the acids from oxidizing and
> forming free radicals.
>
> [As a side note, remember that men at high risk of prostate
> cancer should avoid using flaxseed oil, which may encourage
> growth of prostate cancer cells. In this case, freshly
> ground flaxseed provides a safe alternative.]
>
> --------------------------------------------------------------
> The jury is still out
> --------------------------------------------------------------
>
> Even though CLA has been studied extensively over the past
> 20 years, much more research is needed to fully understand
> how CLA may help prevent tumor growth, if it effectively
> lowers cholesterol and triglycerides, as some studies have
> shown, and if it can help manage insulin resistance.
>
> Beef 'n' Butter
>
> Health Sciences Institute e-Alert
>
> April 20, 2004
>
> **************************************************************
>
> Dear Reader,
>
> Is it possible to prevent cancer AND reduce body fat by
> eating plenty of ground beef and butter?
>
> It just might be, provided it's the right kind of beef and
> the right kind of butter. The key to this potential cancer
> prevention is a fatty acid called conjugated linoleic acid
> (CLA) found in meat and dairy products. But CLA supplements
> may also help reverse existing atherosclerosis, decrease
> progression of osteoporosis, and has been shown to aid in
> the management of glucose and insulin levels as well.
>
> So is CLA some kind of super supplement? At this point, it's
> too early to say for sure. But there's something going on
> here that would seem to be very beneficial to overall
> health. And as several HSI members have found, CLA may
> provide a welcome boost when it comes to getting rid of
> excess body fat, especially in the abdominal area.
>
> --------------------------------------------------------------
> The burger factor
> --------------------------------------------------------------
>
> CLA is part of the omega-6 fatty acid family. And while the
> typical diet supplies more than enough omega-6, the
> mechanism of CLA's action apparently mimics that of omega-3
> fatty acids.
>
> In the November 2000 issue of his Nutrition and Healing
> newsletter, Jonathan V. Wright, M.D., writes that even
> though CLA was discovered in the 1930s, it wasn't properly
> researched until the 1980s when it was identified as an
> anticarcinogenic factor in fried ground beef. Since then,
> the majority of CLA research - and there's been quite a bit -
> has been conducted on animals with very promising results.
>
> In addition to the health benefits mentioned above, studies
> also show that CLA may be a very effective tool in managing
> body fat.
>
> --------------------------------------------------------------
> Exchanging fat for muscle
> --------------------------------------------------------------
>
> In 2000, a Norwegian study followed 60 overweight or obese
> subjects while they took different daily dosages of a CLA
> supplement or placebo. After 12 weeks, researchers found
> significantly greater reduction in body fat mass (BFM) among
> subjects who took either 3.4 grams of CLA daily, or 6.8
> grams daily, compared to the group that took placebo. The
> data showed that CLA doses less than 3.4 grams were
> ineffective in reducing BFM.
>
> In another CLA study conducted at Maastricht University in
> The Netherlands in 2003, researchers examined the effects of
> CLA supplementation on 54 overweight subjects. For 13 weeks,
> subjects received 1.8 grams of CLA each day, 3.6 grams per
> day, or a placebo. Researchers found that among the CLA
> subjects, feelings of fullness and satiety were increased,
> while feelings of hunger decreased, compared to subjects
> taking placebo.
>
> And in a 2000 study from the University of Wisconsin-
> Madison, researchers found that when subjects taking CLA
> regained weight, they were more likely to regain it as
> muscle and not fat.
>
> These results are reflected in comments posted by HSI
> members in an HSI Forum thread titled "CLA." For instance, a
> member named Sunshinemar1 writes that he took one gram of
> CLA daily for about a year. He says, "My loss was very slow
> but I lost inches in the mid section which is the hardest
> fat to lose. Lost more in inches than in weight loss.
> I'm sure if I took one with each meal the results
> would have been much better".
>
> A member named Cork says she began taking CLA to help
> prevent a recurrence of breast cancer. She writes, "As a
> welcome side effect, I have lost about 18 pounds and have
> more stamina for exercise. The weight loss was quite
> gradual. I'm sure I've lost more than 18 pounds of fat and
> have gained muscle because I have gone from size 16 jeans to
> size 10."
>
> Note that Cork effectively combined exercise with her CLA
> regimen, as did a member named Cindy who says that although
> her fat loss has been gradual, she's convinced the CLA has
> helped. She writes, "Since adding the CLA I notice changes
> every week. Anybody who knows about losing body fat knows
> that it is a very gradual process. It's much easier to put
> it on than take it off."
>
> --------------------------------------------------------------
> Food for thought
> --------------------------------------------------------------
>
> Whether you take CLA to help shed body fat, or as Cork did,
> to improve the odds in a fight against cancer, you can
> increase your intake of CLA through dietary sources, or by
> taking supplements.
>
> Good amounts of CLA can be found in butter, beef and whole
> milk, but only when these foods come from grass-fed cattle.
> When cattle are fed grain and hay the CLA content drops. And
> as I've addressed in previous e-Alerts, for optimum health,
> raw unpasteurized milk is always far preferable to the
> pasteurized milk you'll find on most grocery shelves.
>
> As for supplements, Dr. Wright recommends that his patients
> take 2 to 4 grams of CLA daily, but cautions that because
> CLA has not yet been researched extensively enough in
> humans, the possible side effects of higher doses are
> unknown. And if you do take the supplement route, you should
> also be sure to take a broad range of other fatty acids. For
> this, Dr. Wright suggests flaxseed oil, which contains a
> majority of omega-3 fatty acids, but also omega-6 and omega-9
> fatty acids. In addition, vitamin E (as alpha-tocopherol
> along with other tocopherols) should be taken with any fatty
> acid supplement to help keep the acids from oxidizing and
> forming free radicals.
>
> [As a side note, remember that men at high risk of prostate
> cancer should avoid using flaxseed oil, which may encourage
> growth of prostate cancer cells. In this case, freshly
> ground flaxseed provides a safe alternative.]
>
> --------------------------------------------------------------
> The jury is still out
> --------------------------------------------------------------
>
> Even though CLA has been studied extensively over the past
> 20 years, much more research is needed to fully understand
> how CLA may help prevent tumor growth, if it effectively
> lowers cholesterol and triglycerides, as some studies have
> shown, and if it can help manage insulin resistance.
>
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