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Topic: soy protein and breast ca

Forum: High Risk for Breast Cancer — Due to family history, genetics, or other factors.

Posted on: Jan 11, 2008 09:09AM

jtrit1 wrote:

I thought awhile back that I read somewhere that soy protein is not good for you if you have had breast cancer. Does anyone know if this is a proven fact??? please let me know, I would appreciate this.

jtrit1@hotmail.com

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Jan 11, 2008 10:49PM my3girls wrote:

My tumor was estrogen positive.  Therefor, my oc told me to avoid any soy products, because of the estrogen content.  Not to say...if you have a small amount it's bad.  I used to eat soy nuts all the time.  Had to give them up.

Hope this helps you.

Worry is for "shit"! Live, Laugh, Love! //unilateral mast//reconst. 2/4/08 Dx 3/6/2007, IDC, 3cm, Stage II, Grade 2, 0/22 nodes, ER+/PR+, HER2-
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Jan 11, 2008 11:26PM Cynthia1962 wrote:

It hasn't been proven to be harmful (or safe) for women with estrogen positive bc.  So, some women error on the side of caution and avoid it, and others continue to eat it.  Some only eat it in none processed form such as tofu.  I decided to give it up until there was more research to support it's use.

Cynthia 

Mets to bones Dx 1/3/2007, IDC, 2cm, Stage IIIA, Grade 2, 4/18 nodes, ER+/PR+, HER2- Surgery 2/16/2007 Lumpectomy: Right; Lymph node removal: Right, Underarm/Axillary Chemotherapy 3/19/2007 Adriamycin (doxorubicin), Cytoxan (cyclophosphamide), Taxotere (docetaxel) Radiation Therapy 9/6/2007 Breast, Lymph nodes Hormonal Therapy 11/9/2007 Hormonal Therapy 11/1/2010 Arimidex (anastrozole) Dx 11/11/2010, IDC, Stage IV, ER+/PR+, HER2- Chemotherapy 6/1/2012 Xeloda (capecitabine) Chemotherapy 11/14/2012 Navelbine (vinorelbine)
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Jan 11, 2008 11:29PM marlegal wrote:

My onc is a department head at teaching hosp and head of clinical trials in this area ... she advised me (er/pr positive) to keep soy out of my diet.  That was good enough for me.  Careful though ladies ... there is soybean oil and soy protein hidden in lots of stuff you wouldn't think - you must read labels.

"We are all just walking each other home." Dx 8/24/2005, IDC, Right, 2cm, Stage IIB, 1/13 nodes, ER+/PR+, HER2- (FISH)
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Jan 11, 2008 11:53PM Believer0711 wrote:

My cousin is a dietitian in the oncology department, and she also advised me to avoid soy products because soy "acts" or "behaves" like a hormone or something (sorry, can't remember the terminology). Before I was diagnosed, soy has been part of my diet to help reduce cholesterol. I'm not sure if it has anything to do with cancer, but I've definitely avoided soy products, just to be sure.

Hope this helps.

God bless!

Aurora

<><

Deut 7:15 and Psalm 91:16 "The Lord has taken sickness away from the midst of me and given me a full life span." Dx 11/12/2007, IDC, 1cm, Stage I, Grade 3, 0/8 nodes, ER+/PR-, HER2-
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Jan 12, 2008 08:29AM Rosemary44 wrote:

This research seems to prove we should stay away from it:

http://www.ncbi.nlm.nih.gov/pubmed/11431339?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVAbstractPlus

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Jan 12, 2008 09:10AM miss-di wrote:

I've also been told no soy.  As a matter of fact, it was the only thing she said not to eat.

My best to all,

Di 

May an angel walk beside you. Dx 7/28/2007, IDC, 4cm, Stage IV, Grade 3, 3/3 nodes, ER+/PR+, HER2+
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Jan 12, 2008 11:53AM leaf wrote:

*If * you have an ER-/PR- lesion, do you think it might not matter as much? It may stimulate other normal cells though.

I stay away from soy protein, as my path included some + receptors.

Classic LCIS.If knowledge can create problems, it is not through ignorance that we can solve them- Isaac Asimov Dx 12/8/2005, LCIS, ER+/PR- Surgery 1/24/2006 Lumpectomy: Left Hormonal Therapy 7/15/2006 Tamoxifen pills (Nolvadex, Apo-Tamox, Tamofen, Tamone)
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Jan 13, 2008 05:19PM moogie wrote:

I also have heard from my doctors that adding even phytoestrogens isn't recommended. It was hard for me since I ate a lot of soy for years, not loving meat in general. But until more research is done I'm staying clear. In an American diet with so much dairy/chicken in it( which is another source of estrogens...), I doubt women eating in the US would get the full benefit that those in Asia seem to have regarding BC and soy. The Asian diet is so much healthier, being vegetable based....and provides general anti-cancer protection to whatever the soy may do.......

Moogie

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Jan 14, 2008 09:00AM Rosemary44 wrote:

The thinking now that it could be the green tea or other teas they consume in Asia that is really giving the benefit and not the soy.  Supposedly they don't eat as much soy as we give them credit for, but they do drink a lot of tea.

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Jan 16, 2008 11:42AM Sassa wrote:

I am ER-/PR-.  When I was DX, I was taking soy to help avoid menopause symptoms. 

My oncologist said since my cancer had no receptors for hormones, I could keep taking the the soy supplement.

Dx 11/6/2006, IDC, 1cm, Stage IA, Grade 3, 0/9 nodes, ER-/PR-, HER2+
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Jan 16, 2008 07:55PM Nan72 wrote:

My oncologist told me no soy also and you are right Marlegal soy is in many foods I read all labels to be sure. 

Have a great day ladiesSmile

Remember it's not how many breaths you take but how many moments take your breath away
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Jan 16, 2008 09:21PM Cynthia1962 wrote:

It is my understanding that soy lecithin is o.k.  Has anyone else heard this?

Cynthia 

Mets to bones Dx 1/3/2007, IDC, 2cm, Stage IIIA, Grade 2, 4/18 nodes, ER+/PR+, HER2- Surgery 2/16/2007 Lumpectomy: Right; Lymph node removal: Right, Underarm/Axillary Chemotherapy 3/19/2007 Adriamycin (doxorubicin), Cytoxan (cyclophosphamide), Taxotere (docetaxel) Radiation Therapy 9/6/2007 Breast, Lymph nodes Hormonal Therapy 11/9/2007 Hormonal Therapy 11/1/2010 Arimidex (anastrozole) Dx 11/11/2010, IDC, Stage IV, ER+/PR+, HER2- Chemotherapy 6/1/2012 Xeloda (capecitabine) Chemotherapy 11/14/2012 Navelbine (vinorelbine)
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Jan 17, 2008 05:35AM - edited Jan 17, 2008 05:38AM by Rosemary44

Weston says lecithin is the sludge that's left over after soy is processed. 

http://www.westonaprice.org/soy/lecithin.html

Dr. Daniel's book on soy:

http://www.wholesoystory.com/index.php?pageID=Media

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Jan 17, 2008 07:45AM hopefor30 wrote:

Don't know about soy lecithin -- but would be curious to find out since it is in EVERYTHING.

M.

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Jan 17, 2008 01:52PM Cynthia1962 wrote:

Thanks Rosemary...good to know (I think, lol). 

M. - I'll try to find out more about it in regard to use in ER+ women.  It IS in everything!  Frown

Cynthia 

Mets to bones Dx 1/3/2007, IDC, 2cm, Stage IIIA, Grade 2, 4/18 nodes, ER+/PR+, HER2- Surgery 2/16/2007 Lumpectomy: Right; Lymph node removal: Right, Underarm/Axillary Chemotherapy 3/19/2007 Adriamycin (doxorubicin), Cytoxan (cyclophosphamide), Taxotere (docetaxel) Radiation Therapy 9/6/2007 Breast, Lymph nodes Hormonal Therapy 11/9/2007 Hormonal Therapy 11/1/2010 Arimidex (anastrozole) Dx 11/11/2010, IDC, Stage IV, ER+/PR+, HER2- Chemotherapy 6/1/2012 Xeloda (capecitabine) Chemotherapy 11/14/2012 Navelbine (vinorelbine)
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Jan 17, 2008 02:15PM Rosemary44 wrote:

Cynthia,

I'm not too sure it's good to know either.  Slowly but surely, I'm finding products without soy.  Bluebonnet sells vitamins without soy, so on to other finds.  

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Jan 17, 2008 05:43PM Cynthia1962 wrote:

Rosemary - I've never heard of Bluebonnet so I'll have to check it out.  Thanks for the info.  I looked at my vitamins today and the only mention of soy is as a source of the Vit E.  I've been planning to change brands anyway because it contains iron and folic acid.  This is all so time consuming. 

Cynthia 

Mets to bones Dx 1/3/2007, IDC, 2cm, Stage IIIA, Grade 2, 4/18 nodes, ER+/PR+, HER2- Surgery 2/16/2007 Lumpectomy: Right; Lymph node removal: Right, Underarm/Axillary Chemotherapy 3/19/2007 Adriamycin (doxorubicin), Cytoxan (cyclophosphamide), Taxotere (docetaxel) Radiation Therapy 9/6/2007 Breast, Lymph nodes Hormonal Therapy 11/9/2007 Hormonal Therapy 11/1/2010 Arimidex (anastrozole) Dx 11/11/2010, IDC, Stage IV, ER+/PR+, HER2- Chemotherapy 6/1/2012 Xeloda (capecitabine) Chemotherapy 11/14/2012 Navelbine (vinorelbine)
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Jan 18, 2008 09:15AM lvtwoqlt wrote:

I found out how much soy was in foods when my son was dx as severly allergic to soy when he was 9 yrs old. I learned to read every food label, and if the label says 'vegetable protein added' it is soy. Most margarine is soy oil, Fleschmann's margarine used to be 100% corn oil but they reformulated their margarine and it now includes soy.

Sheila

Women are like tea bags, we don't know how strong we are until we were thrown into hot water. Eleanore Roosevelt Diagnosed ADH Feb 2005, ADH Sept 2006 Surgery 2/11/2005 Lumpectomy: Left Surgery 9/9/2006 Lumpectomy: Right Hormonal Therapy 10/11/2006 Dx 4/27/2007, DCIS, Stage 0, Grade 1, 0/7 nodes Surgery 5/31/2007 Mastectomy: Left, Right
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Jan 21, 2008 07:04PM - edited Jan 21, 2008 07:08PM by Chelee

This whole soy issue has driven me NUTS.  Its a full time job TRYING to find anything that doesn't have *some* amount of soy in it!  I never realized till I was DX that just about everything has some soy in it.  What are we to do?! I use to read labels...but NOW I read ALL labels and I'm blown away by the amount of soy and other CRAP that's in all our food.  I'm having a hard time finding foods that are totally safe from soy.   My onc said they don't know for sure about soy but to stay away from it if I can. 

I never realized even the boxes of cereal have soy!  Most all the breads have some soy.  Its unbelievable.  I wish someone would have a store that was full of foods that promised to have NO SOY in it so I wouldn't have to rack my brain over this...its seriously exhausting to try to do all the right things. 

One last thing....Cynthia, we aren't suppose to have folic acid either?  I hadn't heard that one.  :(  I just ordered some Women's GNC vitimans that had everything I needed in it but now that I read your post I see it has 400iu of folic acid in them.  Now what do I do?  I just ordered them online and they will be here.  I swear...we just can't win.  I need to research this folic acid issue as I am not aware of that one.  Thank goodness for this board because you learn so much.  Thanks to all.

Chelee

Dx 12-05, Stage IIIA, Her2/Neu, 3+++, Er & Pr pos, 5 of 16 pos nodes. Dx 12/20/2005, IDC, 3cm, Stage IV, Grade 3, 5/16 nodes, mets, ER+/PR+, HER2+
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Jan 21, 2008 07:21PM labhusky wrote:

Whats wrong with folic acid?  I did a search on the community knowledge exchange typing folic acid and found good things.  Im going to keep taking mine.

Dx 9/13/2007, DCIS, <1cm, Stage 0, Grade 3, 0/0 nodes, ER+/PR+, HER2- Dx 2/7/2015, IDC, Left, Stage IIIC, Grade 3, 11/21 nodes, ER+/PR-, HER2+ (IHC) Chemotherapy 5/5/2015 Taxotere (docetaxel) Targeted Therapy 5/6/2015 Herceptin (trastuzumab) Targeted Therapy 5/27/2015 Perjeta (pertuzumab) Chemotherapy
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Jan 21, 2008 08:36PM Cynthia1962 wrote:

Here is a link to a clinical study that showed that folic acid might promote colon cancer.

http://www.webmd.com/colorectal-cancer/news/20070605/folic-acid-may-not-avert-colon-cancer

and  http://jama.ama-assn.org/cgi/content/short/297/21/2351

More studies are needed, of course, and the trial participants took 1000mg of folic acid daily (which is an extremely high dose) so I'm sure I'm being overly cautious, but there's definitely something up with it.  I took a lot of folic acid while pregnant with my children (1200mcg the first 4 months) and then at least 800mcg after that until they weaned.  There's this as well:  

news.bbc.co.uk/1/hi/health/407... and this on wikipedia:

Most epidemiologic studies suggest that diets high in folate are associated with decreased risk of breast cancer, but results are not uniformly consistent: one large cancer screening trial reported a potential harmful effect of high folate intake on breast cancer risk, suggesting that routine folate supplementation should not be recommended as a breast cancer preventive,[43] but a 2007 Swedish prospective study found that a high folate intake was associated with a lower incidence of postmenopausal breast cancer.[44]So the authorities are not really sure if this will work for cancer or not, (or the age at witch it is safe to start taking folate)but this will all become clear soon. 

It sounds as if it's safer to get it from our food, but who knows.  I would like to find a multivitamin without it, and take it as part of a B-complex  occasionally.   

Cynthia 

Mets to bones Dx 1/3/2007, IDC, 2cm, Stage IIIA, Grade 2, 4/18 nodes, ER+/PR+, HER2- Surgery 2/16/2007 Lumpectomy: Right; Lymph node removal: Right, Underarm/Axillary Chemotherapy 3/19/2007 Adriamycin (doxorubicin), Cytoxan (cyclophosphamide), Taxotere (docetaxel) Radiation Therapy 9/6/2007 Breast, Lymph nodes Hormonal Therapy 11/9/2007 Hormonal Therapy 11/1/2010 Arimidex (anastrozole) Dx 11/11/2010, IDC, Stage IV, ER+/PR+, HER2- Chemotherapy 6/1/2012 Xeloda (capecitabine) Chemotherapy 11/14/2012 Navelbine (vinorelbine)
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Jan 21, 2008 11:54PM katoMato wrote:

Any word about Flax? It too is a type of estrogen. (Awk! I eat it every morning!)

Kaye Dx 3/27/2007, IDC, 1cm, Stage IIA, Grade 2, 2/14 nodes, ER+/PR-, HER2-

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