Omega-3 fats do not protect against cancer Omega-3脂肪不能預防癌症

中文版谷歌中文翻譯(90% 準確率) | English translation
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Contact Dr. Lu for information about cancer treatments。聯繫盧博士,獲取有關癌症治療資訊。

jkzx.com Editor’s note: This study may not have the final word on the anticancer properties of omega 3 fatty acids. We know some cancer patients, of course not all cancer patients, actually beat their cancers using omega 3 fatty acids. However, cancer patients need to be aware that just because omega 3 fat can help fight or protect against cancer, does not mean that it can be effective no matter how small a dose you use. In fact, the dose of omega 3 fatty acids is critical. And the type of omega 3 fat you use is also important. DHA and EPA should be in a good ratio. Long chain omega 3 fat from fish or algae is better than the short chain omega 3 fatty acids from plants.

編者註:這項研究對於ω-3脂肪酸的抗癌特性可能還沒有定論。 我們知道有些癌症患者,當然不是所有的癌症患者,實際上都使用omega 3脂肪酸來抗擊癌症。 但是,癌症患者需要意識到,僅僅因為歐米加3脂肪可以幫助抵抗或預防癌症,並不意味著無論您使用多小劑量的脂肪都能有效。 實際上,ω3脂肪酸的劑量至關重要。 而且,您使用的Omega 3脂肪的類型也很重要。 DHA和EPA應保持良好比例。 魚或藻類中的長鏈omega 3脂肪酸比植物中的短鏈omega 3脂肪酸好。

News Release 28-Feb-2020

Peer reviewed — Systematic review — Humans

University of East Anglia

Omega-3 fats do not protect against cancer – according to new research from the University of East Anglia.

Increased consumption of omega 3 fats is widely promoted globally because of a common belief that it will protect against, or even reverse, diseases such as cancer, heart attacks and stroke.

But two systematic reviews published today find that omega 3 supplements may slightly reduce coronary heart disease mortality and events, but slightly increase risk of prostate cancer. Both beneficial and harmful effects are small.

If 1,000 people took omega 3 supplements for around four years, three people would avoid dying from heart disease, six people would avoid a coronary event (such as a heart attack) and three extra people would develop prostate cancer.

The sister systematic reviews are published today in the British Journal of Cancer and the Cochrane Database of Systematic Reviews.

Omega 3 is a type of fat. Small amounts are essential for good health and can be found in the food that we eat including nuts and seeds and fatty fish, such as salmon.

Omega 3 fats are also readily available as over-the-counter supplements and they are widely bought and used.

The research team looked at 47 trials involving adults who didn’t have cancer, who were at increased risk of cancer, or had a previous cancer diagnosis, and 86 trials with evidence on cardiovascular events or deaths.

More than 100,000 participants were randomised to consume more long-chain omega-3 fats (fish oils), or maintain their usual intake, for at least a year for each of the reviews.

They studied the number of people who died, received a new diagnosis of cancer, heart attack or stroke and/or died of any of the diseases.

Lead author Dr Lee Hooper, from UEA’s Norwich Medical School, said: “Our previous research has shown that long-chain omega 3 supplements, including fish oils, do not protect against conditions such as anxiety, depression, stroke, diabetes or death.

“These large systematic reviews included information from many thousands of people over long periods. This large amount of information has clarified that if we take omega 3 supplements for several years we may very slightly reduce our risk of heart disease, but balance this with very slightly increasing our risk of some cancers. The overall effects on our health are minimal.

“The evidence on omega 3 mostly comes from trials of fish oil supplements, so health effects of oily fish, a rich source of long-chain omega 3, are unclear. Oily fish is a very nutritious food as part of a balanced diet, rich in protein and energy as well as important micronutrients such as selenium, iodine, vitamin D and calcium – it is much more than an omega 3 source.

“But we found that there is no demonstrable value in people taking omega 3 oil supplements for the prevention or treatment of cancer. In fact, we found that they may very slightly increase cancer risk, particularly for prostate cancer.

“However this risk is offset by a small protective effect on cardiovascular disease.

“Considering the environmental concerns about industrial fishing and the impact it is having on fish stocks and plastic pollution in the oceans, it seems unhelpful to continue to take fish oil tablets that give little or no benefit.”

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The research was funded by the World Health Organisation (WHO).

‘Omega-3, omega-6 and total dietary polyunsaturated fat on cancer incidence: systematic review and meta-analysis of randomised trials’ is published in the British Journal of Cancer on February 29, 2020.

‘Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease’ is published in the Cochrane Database of Systematic Reviews on February 29, 2020.

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