グレープフルーツ は乳癌の再発を誘発

乳癌になってしまった女性にグレープフルーツは危ない!!!

皆さんご存知だと思っていたら、知らない方が沢山いらっしゃるようなのでご報告します。


グレープフルーを食べるのは、乳癌になった方は今の所再発の予防のため避けたほうがよさそうです。

以下 American Cancer Research の 記事ですが。 100%明確に証明されたのではありません。
 
40台 以降の乳癌の殆どがホルモン性の乳癌です。この記事を読むかぎりでは、 乳癌罹患後は再発を避けるため

ことごとく女性ホルモンをさけるように 米国では常識になっています。

グレープフルーツの成分がエストロゲンと同じような働きを血中でするらしくその理由で控えたほうが良さそうで

す。  

http://www.aicr.org/press/health-features/health-talk/2014/jun14/grapefruit-breast-cancer.html



American Cancer Research の記事です。


Karen Collins, MS, RDN, CDN American Institute for Cancer Research


Q: Is it true that grapefruit could affect breast cancer risk? A: Research has raised questions, but it is inconclusive and limited so we do not yet have a clear answer. Natural compounds unique to grapefruit can inhibit the breakdown of certain medications, resulting in higher blood levels of those drugs. (Check with your doctor if you are taking medications.) It is possible that those compounds could act in the same way to estrogen, raising its blood levels. High blood levels of estrogen can spur the development of some breast cancers. There are three major population studies on the topic: one showing an increased risk, the other two not showing any increased risk. A 2007 population study found that postmenopausal women who ate on average a quarter grapefruit a day had higher risk of breast cancer than those who ate none. In 2008 and 2009, two other major studies found no link between the same amount of grapefruit consumption and breast cancer risk or estrogen levels. One recent intervention study has tested how grapefruit and grapefruit juice affect estrogen levels. Results were inconsistent, with differences seen between grapefruit products, specific forms of estrogen and among individual women. Grapefruit has a lot to offer nutritionally. It is a good source of vitamin C and several phytochemicals that may have health-protective effects. In laboratory studies, one called naringenin can inhibit growth of breast and several other cancer cells and inhibit early stages of colorectal cancer development. There is not enough research for a recommendation on grapefruit intake. Women who are concerned may wish to avoid or limit grapefruit and grapefruit juice until additional research provides more clarity. Otherwise, it’s reasonable to enjoy grapefruit as one among a wide variety of fruits." target="_blank">  http://www.aicr.org/press/health-features/health-talk/2014/jun14/grapefruit-breast-cancer.html


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