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Topic: Experience with Fasting during Chemo?

Forum: Chemotherapy - Before, During, and After —

Regimens, side effects, and support from others going through chemo.

Posted on: Nov 12, 2019 11:20AM

Honey2289 wrote:

I meet with my MO this coming Thursday and anticipating chemo recommendation as my Mammaprint came back high risk. My breast surgeon mentioned a few times that she's had patients have great results from fasting during chemotherapy. Studies show fasting helps reduce side effects from treatment and allows cancer cells to be better targeted by the chemo drug.

I'm wondering if anyone else has fasted during chemo? What chemo regimen did you receive and what was your fasting schedule?


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Nov 12, 2019 11:26AM SparkleGirl2018 wrote:

Hi Honey2289, I did not do the fasting but have read posts from people on here that have with good results. If you do a search for Fast Mimicking you will see quite a few posts. Good Luck with your treatments. I just finished mine the beginning of October and I am starting to feel more and more like myself. There is a light at the end of the tunnel!!

Dx 11/29/2018, IDC, Right, 3cm, Stage IIB, 2/2 nodes, ER+/PR+, HER2- Surgery 1/21/2019 Mastectomy: Right; Reconstruction (right): Tissue expander placement Chemotherapy 3/14/2019 AC + T (Taxol) Radiation Therapy 8/20/2019 Whole-breast: Breast, Lymph nodes Surgery Reconstruction (left): Saline implant; Reconstruction (right): Saline implant
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Nov 12, 2019 11:37AM hapa wrote:

I fasted for one of my chemo treatments and it didn't seem to make any difference. My side effects were well managed and I was able to work full time and do cardio five days a week, though it was cumulative and I was slower and more tired toward the end. I believe I fasted for my fifth infusion and my side effects were worse than after my fourth infusion, not as bad as after my sixth infusion. Infusion #5 is when I started getting significant swelling, perhaps it was due to poor nutrition/lack of protein due to fasting, but I suspect I would have started swelling either way. I didn't do it again because it didn't seem to make a difference. I think a lot of people who fast would have done fine on chemo regardless. I assume people who fast are already more health conscious and more tolerant of physical unpleasantness than average, and there's no way to do a blind fasting trial, so there's probably some placebo effect at play. But hey, if you can trick yourself into not hating life on chemo, why not?

Dx 12/14/2017, IDC, Right, 3cm, Stage IIIA, Grade 3, ER+/PR+, HER2- (FISH) Hormonal Therapy 1/2/2018 Zoladex (goserelin) Hormonal Therapy 1/2/2018 Arimidex (anastrozole) Targeted Therapy 2/14/2018 Ibrance (palbociclib) Dx 3/20/2018, IDC, Right, 3cm, Stage IIIA, 3/18 nodes, ER+/PR+, HER2+ (FISH) Targeted Therapy 3/28/2018 Perjeta (pertuzumab) Targeted Therapy 3/28/2018 Herceptin (trastuzumab) Chemotherapy 3/28/2018 Carboplatin (Paraplatin), Taxotere (docetaxel) Surgery 8/22/2018 Lymph node removal: Right, Underarm/Axillary; Mastectomy: Right; Prophylactic mastectomy: Left; Reconstruction (left): Silicone implant; Reconstruction (right): Silicone implant Radiation Therapy 10/22/2018 Whole-breast: Lymph nodes, Chest wall Hormonal Therapy 12/21/2018 Arimidex (anastrozole), Zoladex (goserelin) Targeted Therapy Nerlynx
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Nov 16, 2019 02:06PM LisaKPisa wrote:

Honey - I’m also considering it, but upon researching found they’re recommending 60 hours pre- chemo and 24 after. Not sure I can do that! Also won’t get a chance to talk to my doc before my first infusion on Thurs.

Hapa - Would you mind sharing how long you fasted, before and/or after?

Age 50, EndoPredict EPclin score 4.4 (high risk) Dx 8/22/2019, IDC, Right, 2cm, Stage IB, Grade 1, 1/3 nodes, ER+/PR-, HER2- (IHC) Surgery 9/25/2019 Lumpectomy: Right; Lymph node removal: Sentinel Chemotherapy 11/21/2019 AC + T (Taxol)
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Nov 16, 2019 03:26PM MinusTwo wrote:

Maybe see how you react to the drugs first?
I never had nausea but almost constant diarrhea. During treatment I lost 60 lbs - and I really didn't need to lose weight. I went from a size 12/14 to a size 4/6 and looked emaciated. I can't imagine what would have happened if I stopped eating on top of that.

2/15/11 BMX-DCIS 2SNB clear-TEs; 9/15/11-410gummies; 3/20/13 recurrance-5.5cm,mets to lymphs, Stage IIIB IDC ER/PRneg,HER2+; TCH/Perjeta/Neulasta x6; ALND 9/24/13 1/18 nodes 4.5cm; AC chemo 10/30/13 x3; herceptin again; Rads Feb2014

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