What Chemotherapy Does to Your Body

These methods not only help alleviate the discomfort caused by chemo, but they also support your body in fighting cancer.


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More videos on prolonged fasting and the immune system:

00:00 Introduction: Tips for handling chemo side effects
1:10 Five phytonutrients with chemo-preventative factors
2:57 Magnesium deficiency and cachexia
3:15 Selenium and immunity
6:01 Intermittent fasting boosts immunity
6:19 Exercise to alleviate chemotherapy side effects
6:44 Cold therapy for reducing chemo and radiation effects
6:52 Vitamin D to bolster the immune system

One of the most common treatments for cancer is chemotherapy, which uses powerful drugs to target and kill cancer cells. Chemo can cause uncomfortable side effects such as nausea, fatigue, hair loss, and weakened immune function. Fortunately, there are ways to counter these side effects and support your body during chemo treatment.

Compounds found in plants have a range of health benefits, including cancer prevention. Five specific phytonutrients that have shown strong chemo-preventative factors are sulforaphane, resveratrol, quercetin, epigallocatechin gallate (EGCG), and allicin. They can be found in foods such as broccoli, grapes, green tea, and garlic.

Magnesium deficiency has also been linked to cachexia, a condition where the body loses tissue and becomes weak. This can be especially dangerous for cancer patients who are already struggling with weight loss and fatigue due to their illness.

Selenium plays a crucial role in immune function. If you are undergoing chemo or have cancer, you may want to supplement with 200 to 400 micrograms of selenium daily.

Intermittent fasting, prolonged fasting, and exercise are powerful tools in reducing chemo side effects.

Cold therapy, such as ice baths, has also been found to reduce the side effects of chemotherapy and radiation. Lastly, vitamin D has been shown to play a crucial role in strengthening the immune system. If you have cancer, it’s recommended that you take high doses of vitamin D, with a target level of at least 120 nanograms per milliliter of blood.

Remember to always consult with your doctor before making any changes to your diet or exercise routine while undergoing chemotherapy.

Dr. Eric Berg DC Bio:
Dr. Berg, age 59, is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the author of the best-selling book The Healthy Keto Plan and is the Director of Dr. Berg Nutritionals. He no longer practices but focuses on health education through social media.

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Dr. Eric Berg received his Doctor of Chiropractic degree from Palmer College of Chiropractic in 1988. His use of “doctor” or “Dr.” in relation to himself solely refers to that degree. Dr. Berg is a licensed chiropractor in Virginia, California, and Louisiana, but he no longer practices chiropractic in any state and does not see patients, so he can focus on educating people as a full-time activity, yet he maintains an active license. This video is for general informational purposes only. It should not be used to self-diagnose, and it is not a substitute for a medical exam, cure, treatment, diagnosis, prescription, or recommendation. It does not create a doctor-patient relationship between Dr. Berg and you. You should not make any change in your health regimen or diet before first consulting a physician and obtaining a medical exam, diagnosis, and recommendation. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

#keto #ketodiet #weightloss #ketolifestyle

Thanks for watching! Try these tips to help support your body during chemotherapy treatment. I'll see you in the next video!


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  1. @jamesharley9679 on May 27, 2024 at 12:08 pm

    I worked in Oncology in my 20s … I m so glad u made this . I quit after 4 years because I saw we were killing folks

    • @beachgal5062 on May 27, 2024 at 12:13 pm

      I have always thought this. They killed my mother and family with these horrible treatments! It’s all about the $$$$! Shame on the medical Dr’s allowing this to happen! A book called “Dr’s have a License to kill!”

    • @fidelcatsro6948 on May 27, 2024 at 12:21 pm


    • @jeff-sq4fe on May 27, 2024 at 12:37 pm

      ​@@beachgal5062vaxes killed my mom & sis in 2020

    • @sandratripp1997 on May 27, 2024 at 12:48 pm

      Yes, I know for a fact, it was my faith, nutraceuticals, and herbalceuticals I made it through. You got so much else to carry even when they say you are cancer free. You are something financially broken, physically broken and emotionally broken as well. Put all those traumas together and you have a catastrophe situation. Soursop is one of many alternatives to use. And it is God’s medicine and it is 10x more powerful than chemotherapy. I got high doses of the chemotherapy because of my weight.
      God bless you for seeing the truth and acting accordingly.

    • @jeanhowarth1852 on May 27, 2024 at 1:04 pm

      Amen. My sweet husband found that out.

  2. @bettsyaffaqui3008 on May 27, 2024 at 12:09 pm

    Dr. Berg is my primary care physician, God bless Dr. Berg❤

    • @beachgal5062 on May 27, 2024 at 2:28 pm

      You are so blessed!

    • @catitude4 on May 27, 2024 at 2:45 pm

      Mine too.

    • @awadammohammed7863 on May 27, 2024 at 3:39 pm

      Does he still have his location in Virginia ? or you mean youtube ?

    • @veralubov7405 on May 27, 2024 at 3:47 pm

      We are blessed to have him! God knows how he serves the humanity.

    • @jamesharley9679 on May 27, 2024 at 4:12 pm


  3. @rn5697 on May 27, 2024 at 12:13 pm

    1) Sulphoriphane
    2) Resveratrol
    3) Quercetin
    4) Green Tea EGCG
    5) Allicin
    6) Magnesium
    7) Selenium
    8) Intermittent fasting
    9) Prolonged faster
    10) Exercise
    11) Cold therapy
    12) Vitamin D3

    • @sandratripp1997 on May 27, 2024 at 12:29 pm

      Thanks so much. I can see like 2 of these on this list I need to incorporate.

    • @AahyiSam on May 27, 2024 at 12:49 pm

      Thank you so much!!

    • @KL-fx6hn on May 27, 2024 at 12:50 pm

      Thank you so much🤝

    • @mariar3424 on May 27, 2024 at 1:38 pm

      Thanks for the summary!

    • @samaelmartinus3273 on May 27, 2024 at 1:46 pm

      I love when people do this. One thing I like about Dr berg is by the time you find this comment he’s usually started naming them already lol

  4. @sandratripp1997 on May 27, 2024 at 12:18 pm

    The worst mistake I ever made was to take chemotherapy. That stuff destroyed my strength, brain fog, nerves pain from hell. I am just making my way back. I was walking 2 to 3 miles a day. After 6 months of chemotherapy and a couple rounds of radiation, I was in a wheelchair. I never stopped moving and my family made sure I could get to a pool so I could continue to exercise. I found a minster who is 100% against any pharmaceutical drugs of any kind. I have also been helped greatly from your natural remedies from herbs, good foods, and vitamins also Dr. Berg. I am now walking with the aid of a cane right now and still making progress.

    • @bigbadwolfe7849 on May 27, 2024 at 12:21 pm

      I hope you get to feeling better. Hang in there and keep fighting 💪 🙏

    • @mwhite4764 on May 27, 2024 at 12:28 pm

      how is spraying radiation on you supposed to help in any way? They tried to kill you.

    • @az894 on May 27, 2024 at 12:32 pm

      You will gain strengh… have faith. My father had 2x 6 month of chemo and radiation with hearth insufficiency, so it took him very long. But it got better with every year.

    • @AllMediaAlchemy on May 27, 2024 at 1:00 pm

      You can do it Sandra! It’ll just take time. Fear not, because time is on your side. It always is.

    • @Marty22408 on May 27, 2024 at 1:00 pm

      Chemotherapy is very well known to not have any long term good effects on the body and it certainly destroys good things. Oncologists literally say “they hope chemo will kill cancer, before it kills patients”. Also, I know that doctors never go on chemo when they get cancer. They know better than that. Tells you all you need to know.

  5. @HYEpower on May 27, 2024 at 12:42 pm

    You should have talked about hemp… my mom smoked cannabis and took edibles when she was on chemo. It really helped.. although smoking may lower minerals it stops nausea… but eating help seed will give you enough selenium as well as eating edibles and flowers because the hemp plant absorbs selenium in the soils.. I just looked up selenium in hemp and learned this and it explains why it works

    • @megmodaff5989 on May 27, 2024 at 3:09 pm

      I agree! Except for the smoking part

  6. @helpinyerdasellavon on May 27, 2024 at 12:51 pm

    Wonderful information, Dr Berg. Always love your insightful content. Thank you ❤

    • @Drberg on May 27, 2024 at 2:17 pm

      Glad to know that you liked this post!

  7. @beccamiller9929 on May 27, 2024 at 12:51 pm

    This is so revelent to me at this time. My husband is going through chemotherapy treatments. The doctors are restricting his diet to only cooked vegetables and fruits and cooked meats due his lower white blood cells. Dr. Berg, I have been watching your videos for several years now and appreciate your work, your thoughts and research and linking them all for your viewers benefits. And all your notes in the description box. Those are the real golden nuggets to reference back on. Thank you so much. I am the weird one in my family doing all this health research and keep saying how the Healthcare system is now out to heal us. They want us dependent on the system so we can keep paying into it.

    • @djben928 on May 27, 2024 at 1:08 pm

      Dr. Berg is a God sent doctor. May God bless him more.

    • @veralubov7405 on May 27, 2024 at 3:57 pm

      You may want to read what I suggested in response to Sandra’s comment above. God bless!

  8. @brothermine2292 on May 27, 2024 at 12:54 pm

    Regarding fasting, many years ago I read about a study about fasting involving mice given chemo treatments. Some of the mice were forced to fast for the 3 days prior to the chemo treatment. That group didn’t suffer the undesirable side effects that the control group experienced. The theory offered to explain the effect was that fasting slows the metabolism of normal, healthy cells more than tumor cells, so the uptake of the chemo into the normal cells is much less than the uptake into the tumor cells, which reduces the side effects on the normal cells while still allowing the chemo to attack the tumor cells.
    If that’s correct, it would allow two options for chemo treatments. Either (1) use the standard dose of chemo with reduced side effects, or (2) use a larger-than-standard dose of chemo and manage the side effects in the conventional ways, so that the larger dose will more reliably kill the tumor cells without excessive harm to normal cells. Research would be needed to determine the best dose.

  9. @rosieruiz905 on May 27, 2024 at 1:06 pm

    DR.Berg thank you,i have breast cancer and going through chemotherapeutic, I feel like crap. Im 73 years young never been sick and in my family no one has had cancer in my family. The reason i went conventional was my step daughter in December 2023 died of cancer, she went holistic,homeopathic medicine and her cancer spread all over her body. That scared me. I rely on God’s mercy and strength praying to get through this and hopefully go back into holistic medicine again.

    • @mikepeek5655 on May 27, 2024 at 1:56 pm

      So many variables .
      My opinion ….Her cancer could have been it late stages. Your could be different and you are not her.
      Holistic and fasting after cancer has spread so far may not help.
      The chemo is a shotgun approach. Some have been helped and some not so fortunate.
      Dr Boz mother went keto in her 70s and did fasting big time. She still died. That’s one example. Yet, it could have helped others.
      If I get cancer, I will not do chemo. And, if I still die then so be it.
      I have had a good life and grateful and blessed. Good luck.

    • @tiffanydash2057 on May 27, 2024 at 2:29 pm

      Good day ma’am my I ask what type of cancer did you step daughter have. Did she any form of treatment like radiation ☢️ treatment. What was her diet do to her homopathic treatment

    • @liz0707 on May 27, 2024 at 7:16 pm

      I’m in the same boat as you ,same age. Listen to your body . Most important advice I got was to praise God the Almighty day and night. Re direct all negative thoughts to gratitude. I followed this advice blindly with positive results. I wish the same for you. All my love.

    • @now591 on May 27, 2024 at 7:20 pm

      did she get jab(s)? Quite likely. Turbo cancer.

  10. @user-dc8dx3ls4d on May 27, 2024 at 1:22 pm

    Fasting, eating only natural meat, and preventing the consumption of carbohydrates, all kinds of sugars, and juices during the period of chemotherapy is the only thing capable of strengthening the body’s immunity.

    • @tiffanydash2057 on May 27, 2024 at 2:21 pm

      Didn’t he say he say chemotherapy destroys the immune system why would one take a chance on injecting themselves with those poison ☠️ 🤦🏼‍♀️

  11. @ricardooconnor2362 on May 27, 2024 at 1:50 pm

    I strongly advise folks to write these down in a diary or book. Keep a record of these gems.

    • @jamesharley9679 on May 27, 2024 at 4:12 pm


  12. @lianegustafson1729 on May 27, 2024 at 1:52 pm

    Dr Harry Foster also wrote What Really Causes Parkinsons and What Really Causes Alzheimers and What Really Causes Multiple Sclerosis. He was a medical geographer and studied why certain diseases were prevalent or not in areas of the world. I loved his lectures, he was a university professor.

  13. @sek4amk729 on May 27, 2024 at 2:10 pm

    Thank you for hilighting how very important selenium is to everyone not just cancer patients

    • @Drberg on May 27, 2024 at 5:46 pm

      You are very welcome.

  14. @guyroy4857 on May 27, 2024 at 2:37 pm

    Dr, Berg, I’m very lucky I passed on chemotherapy. I used, and modified the Joe Tippens protocol. Fenbendazole, menbendazole, ivermectin, I’m very grateful, no side effect.
    I also quit toothpaste, alcohol,

    • @richmann8230 on May 27, 2024 at 3:45 pm

      These are all good… Plus albendazole . Clinical studies on each of these available on pubmed. I suggest that you research cimetidine as well… Excellent longevity studies are available on pubmed. Proven repurposed meds with very few side effects and excellent results. 😊😊

  15. @mikerepairsstuff on May 27, 2024 at 2:38 pm

    My best friend died from bladder cancer @55 years old. Totally miss by buddy Greg.😢

  16. @CrestedSaguaro520 on May 27, 2024 at 2:48 pm

    I sincerely hope every day that I never develop cancer. Thankfully it doesn’t run in my family. I make sure to never eat processed foods, I avoid all sugar except fruits. I only eat whole organic foods. I also exercise 5 days each week, sometimes 6.

    Cancer is the worst thing ever. I would never wish it upon even my worst enemy.

  17. @curryisgood6103 on May 27, 2024 at 3:03 pm

    my mom and dad both passed away because of cancer in the last 6 months. I am still grieving. My opinion on chemo is really mixed. My dad refused it and died really quickly while my mom battled it for 4 years, took chemo twice and at least lived longer but still suffered. I tried so many things when she was sick but my honest opinion is that its hard once its spread. Prevention and regular checks are so important. Just dont get to the point to get it in the first place. For people currently having cancer I wish you the best and stay strong. At the end you must fight and try your best to beat it.

    • @vickiekeeton3658 on May 27, 2024 at 3:50 pm

      Prayers for you.🙏

  18. @SHERRY0010 on May 27, 2024 at 4:05 pm

    My tip : After being diagnosed with cancer in 2015. I had surgery and was injured by it !
    When I went for a check up , I was “ambushed “ by an oncologist / radiologist who insisted I have radiation therapy . Little did he know I had obtained my pathology report . I came to the conclusion radiation would not help, in fact it can cause another cancer . Get your pathology report, and dissect it !!

    • @rachelstrahan2486 on May 27, 2024 at 4:35 pm


    • @marmaladesunrise on May 27, 2024 at 6:30 pm


  19. @MrYAMAHA32177 on May 27, 2024 at 4:43 pm

    My friend on his death bed (Leukemia) told me to never make the mistake of doing chemo therapy like he did…….
    Instead of enjoying his last six months of life left he went through hell for eight months and hated every minute of it, and still died.

    • @rhondak4940 on May 27, 2024 at 6:34 pm


  20. @4Righteousness on May 27, 2024 at 5:38 pm

    I am 14 yrs breast cancer free without chemo or radiation. I did do the drastic double mastectomy. The Dr asked was I trying to kill myself. I said to myself no but you sure are and I have been taking supplements ever since. Become your own advocate and do your research. All praise to The Most High, His Holy Spirit guided me to His truth on meds and through my journey. At 67 I take zero meds and have no health issues. You are so correct Dr Berg, thank you.

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