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Last updated: May 26, 2026

A gynecologic cancer diagnosis raises urgent questions about treatment, side effects, and quality of life. Many women with ovarian, cervical, or endometrial cancer want to know which holistic or integrative therapies can safely complement their conventional care – and which claims to avoid. This guide examines the evidence behind integrative therapies for gynecologic cancer, addressing the specific concerns and questions women face during treatment and recovery in 2026.

Why Are So Many Women With Gynecologic Cancer Exploring Integrative Therapies?

The vast majority of women with gynecologic cancers already use some form of integrative or complementary therapy alongside their conventional treatment. Research shows that 87% of women with gynecologic malignancies reported using at least one complementary or alternative medicine (CAM) therapy within a 12-month period, and a separate multicenter study found 89.4% of gynecologic cancer patients were actively using integrative methods during their care.

What Do the Numbers Tell Us About CAM Use in Gynecologic Oncology?

A 2015 study of 2,508 women at an NCI-designated comprehensive cancer center found that 87% of those with gynecologic malignancies used at least one CAM therapy in the prior 12 months. A 2020 multicenter cross-sectional study confirmed this trend, reporting that 89.4% of gynecologic cancer patients were currently using integrative methods.

The most common modalities were exercise therapy (57.5%) and vitamin supplements (51.4%). These numbers demonstrate that interest in integrative care is mainstream among gynecologic cancer patients – not a fringe phenomenon. The steady rise in Google Trends searches for terms like “integrative oncology” and “holistic cancer treatment” through 2025 and into 2026 reflects the same pattern.

What Are Women Searching for Online – and What Questions Keep Coming Up?

Online communities, including Reddit forums and search engine “People Also Ask” results, reveal consistent question clusters from women with gynecologic cancers. The most frequent topics include whether supplements like turmeric or mushroom extracts are safe during chemotherapy, how to manage side effects naturally, whether special diets can prevent recurrence, and how to spot unproven “cancer cure” claims.

Many women also express fear about the toxicity of chemotherapy and radiation, seeking gentler alternatives – and want to understand the difference between integrating supportive therapies and abandoning conventional treatment altogether. This article addresses each of these question clusters with evidence-based answers specific to gynecologic cancers.

What Is the Difference Between Complementary, Alternative, and Integrative Medicine in Cancer Care?

Complementary medicine refers to therapies used alongside standard cancer treatment, alternative medicine refers to therapies used instead of standard treatment, and integrative medicine is an evidence-informed approach that combines conventional cancer care with mind-body practices, natural products, and lifestyle modifications. The National Cancer Institute (NCI) maintains these definitions as the foundation for safe cancer care decision-making.

These are not interchangeable terms. Complementary therapies – such as acupuncture for nausea or meditation for anxiety – work within the structure of conventional oncology. Alternative therapies replace that structure entirely, which carries measurable risk. Integrative oncology represents the current evidence-based model, emphasizing coordination between supportive modalities and standard medical care.

Why Does This Distinction Matter for Women With Ovarian, Cervical, or Endometrial Cancer?

Gynecologic cancer treatment regimens create unique side-effect profiles that demand careful integration. Platinum-based chemotherapies (cisplatin, carboplatin), PARP inhibitors (olaparib, niraparib), pelvic radiation, and radical surgeries including hysterectomy and oophorectomy produce symptoms ranging from peripheral neuropathy and surgical menopause to pelvic floor dysfunction and sexual health changes.

Choosing the right integrative approach within this context can meaningfully reduce suffering and improve treatment completion. Choosing the wrong alternative – or using supplements that interfere with chemotherapy metabolism – can compromise survival. The distinction between these categories is not academic. For women undergoing gynecologic cancer treatment, it can be life-altering.

Can Alternative Medicine Alone Cure Gynecologic Cancer?

No – patients who replace conventional cancer treatment with alternative therapies face significantly higher risk of death. A landmark 2018 study published in the Journal of the National Cancer Institute found that patients using alternative medicine instead of conventional treatment had a 2.5 times greater risk of death (HR 2.50, 95% CI 1.88-3.27) and a 5-year survival rate of only 54.7%, compared with 78.3% for those receiving conventional treatment.

What Does the Landmark JNCI Study Show About Survival Outcomes?

The study, led by Skyler B. Johnson, MD, at Yale School of Medicine, analyzed outcomes across multiple cancer types. As Dr. Johnson stated, “Although rare, alternative medicine utilization for curable cancer without any conventional cancer treatment is associated with greater risk of death.” For breast cancer specifically, the hazard ratio reached 5.68 – meaning patients who chose alternatives alone were nearly six times more likely to die.

The following table summarizes the key survival data from this study:

Treatment Approach 5-Year Survival Rate Hazard Ratio for Death
Conventional treatment 78.3% Reference (1.0)
Alternative medicine only 54.7% 2.50
Alternative medicine only (breast cancer) Not separately reported 5.68

The NCI’s own summary of this research reinforces the message: alternative medicine used in place of standard treatment is associated with worse survival. This evidence forms the foundation of the “complement, never replace” principle that guides responsible integrative oncology.

How Can Women Spot Unproven “Cancer Cure” Claims?

Women diagnosed with gynecologic cancer are frequently targeted by practitioners and products promising cures without evidence. Practical red flags include:

  • Promises of guaranteed cure or remission from any therapy
  • Requests to stop or refuse conventional treatment (chemotherapy, surgery, radiation)
  • Reliance on patient testimonials rather than peer-reviewed clinical evidence
  • Claims that a single supplement, diet, or protocol can treat all cancers
  • Lack of licensed medical professionals overseeing care
  • No willingness to communicate with the patient’s oncology team

The NCI advises patients to evaluate all CAM claims critically and to discuss any therapy with their oncologist before beginning it.

Which Integrative Therapies Have the Strongest Evidence for Gynecologic Cancer Patients?

Mindfulness-based interventions, acupuncture, exercise therapy, yoga, and massage therapy have the strongest evidence for symptom management during and after gynecologic cancer treatment, according to the 2024 SIO-ASCO guidelines. These therapies are recommended for anxiety, depression, fatigue, nausea, pain, and neuropathy – all common in gynecologic oncology – when used alongside conventional care.

How Does Mindfulness Help With Anxiety and Depression During Gynecologic Cancer Treatment?

The 2024 SIO-ASCO guideline panel reviewed over 400 randomized controlled trials and found the strongest evidence for mindfulness-based interventions (MBIs) for both anxiety and depression during and after cancer treatment. Linda E. Carlson, PhD, lead author of the guideline and clinical psychologist at the University of Calgary, stated: “The strongest recommendations across both anxiety and depression, both during and after treatment, were for mindfulness-based interventions.”

Dr. Carlson further noted: “In that [ASCO] guideline, it clearly states that first-line treatments are behavioral; they are not pharmacological.” This is particularly significant for gynecologic cancer patients who face body-image distress, sexual health concerns, fertility grief, and the emotional weight of surgeries that alter reproductive function. Mindfulness practices offer an evidence-based, non-pharmacological pathway for managing these layered emotional challenges.

Can Acupuncture Reduce Chemotherapy Side Effects in Gynecologic Cancer?

The NCI’s acupuncture evidence summary (PDQ) supports acupuncture for chemotherapy-induced nausea, pain, peripheral neuropathy, hot flashes, and fatigue – all symptoms that are prevalent in gynecologic cancer treatment. For women who undergo oophorectomy and experience surgical menopause, acupuncture’s evidence for managing hot flashes is especially relevant, particularly when hormone replacement therapy is contraindicated.

A 2022 pragmatic study from the Technion – Israel Institute of Technology found that advanced gynecologic cancer patients (stage III/IV) who received weekly individualized integrative treatments – including acupuncture – during chemotherapy experienced lower rates of peripheral neuropathy and pain. This study is one of the few specifically designed for gynecologic cancer populations and is discussed further below.

Does Exercise Therapy Improve Outcomes for Women Undergoing Gynecologic Cancer Treatment?

Exercise therapy is the most commonly used integrative modality among gynecologic cancer patients, reported by 57.5% in the multicenter study cited above. The SIO-ASCO guidelines recommend exercise for cancer-related fatigue, which is among the most debilitating symptoms during and after chemotherapy and radiation for ovarian, cervical, and endometrial cancers.

For women recovering from gynecologic surgery, pelvic floor rehabilitation represents a specialized area of exercise therapy that remains under-discussed in general oncology content. Pelvic floor exercises, guided by a trained therapist, can address urinary incontinence, pelvic pain, and sexual dysfunction after radical hysterectomy or pelvic radiation – issues specific to this patient population.

What Other Evidence-Based Integrative Options Should Gynecologic Cancer Patients Consider?

The following table maps integrative therapies to specific symptoms commonly experienced by gynecologic cancer patients, based on SIO-ASCO and Mayo Clinic guidance:

Integrative Therapy Symptoms Addressed Gynecologic Cancer Relevance
Yoga Stress, fatigue, sleep problems Pelvic tension relief, body reconnection after surgery
Massage therapy Pain, anxiety, muscle tension Post-surgical recovery, lymphedema management
Music therapy Anxiety, pain perception Infusion session support during chemo cycles
Relaxation techniques Stress, insomnia, anxiety Pre-surgical and pre-treatment anxiety reduction
Tai chi Fatigue, balance, stress Gentle option during and after debulking recovery
Hypnosis Pain, anxiety, hot flashes Surgical menopause symptom management

Each modality should be discussed with the oncology team to ensure safety and appropriate timing within the overall treatment plan.

Can Integrative Oncology Actually Help Women Stay on Their Chemotherapy Regimen?

Yes – a gynecologic-cancer-specific study found that integrative oncology treatments during chemotherapy helped advanced-stage patients maintain better chemotherapy adherence while experiencing fewer side effects. This finding reframes integrative care not as a competitor to conventional treatment but as a tool that makes standard therapy more tolerable and completable.

What Did the Technion Study Find for Advanced Gynecologic Cancer Patients?

The 2022 pragmatic study from the Technion – Israel Institute of Technology examined advanced gynecologic cancer patients (stage III/IV) who received weekly individualized integrative oncology treatments alongside their chemotherapy regimen. Key outcomes included better relative dose intensity – meaning patients completed more of their planned chemotherapy – and lower rates of chemotherapy-induced peripheral neuropathy and pain.

This study is notable because it is one of the few peer-reviewed investigations focused specifically on integrative oncology within a gynecologic cancer population, rather than the tumor-agnostic frameworks that dominate the literature.

Why Does Chemotherapy Adherence Matter So Much for Survival?

In ovarian and endometrial cancers, dose reductions, treatment delays, and early discontinuation due to intolerable side effects can compromise survival outcomes. Completing the full prescribed chemotherapy course is associated with better response rates and longer progression-free survival. When integrative therapies help patients manage neuropathy, pain, fatigue, and nausea well enough to remain on schedule, they function as enablers of effective conventional care – not replacements for it.

Are Herbal Supplements and Vitamins Safe During Gynecologic Cancer Treatment?

Many herbal supplements and vitamins can interfere with gynecologic cancer treatments, including platinum-based chemotherapy and PARP inhibitors. The NCI warns that some dietary supplements do not work as claimed and may be harmful, alter how cancer treatments function, or reduce the effectiveness of prescribed medications. Patients should disclose every supplement they take to their oncology team before and during treatment.

Which Supplements Can Interfere With Platinum-Based Chemotherapy?

Cisplatin and carboplatin – the backbone of many ovarian and cervical cancer chemotherapy regimens – can interact with several common supplements. The NCI’s dietary interactions summary highlights concerns about:

  • High-dose antioxidants (vitamins C, E, beta-carotene) – may theoretically protect cancer cells from the oxidative damage chemotherapy is designed to cause
  • St. John’s wort – a potent CYP450 enzyme inducer that can accelerate drug metabolism and reduce chemotherapy blood levels
  • Kava – potential hepatotoxicity compounding liver stress from chemotherapy

CYP450 enzyme pathway interactions are the primary mechanism by which supplements alter drug metabolism, making this a critical safety consideration for any patient on systemic cancer treatment.

Why Is St. John’s Wort Dangerous With PARP Inhibitors Like Olaparib?

Olaparib, widely prescribed for BRCA-mutated ovarian cancer, is primarily metabolized by the CYP3A4 enzyme. St. John’s wort is a strong CYP3A4 inducer, meaning it accelerates olaparib’s breakdown in the body. This can dramatically reduce olaparib blood levels to subtherapeutic concentrations – effectively rendering the medication unable to control cancer at its prescribed dose.

A 2022 pharmacokinetic review confirmed that strong CYP3A4 inducers, including St. John’s wort, and strong CYP3A4 inhibitors, including grapefruit juice, can significantly alter PARP inhibitor drug exposure. Niraparib carries a lower CYP-based interaction risk because it is metabolized by carboxylesterases rather than CYP3A4, but it still has transporter-mediated interaction potential. Women taking any PARP inhibitor should treat supplement use as a prescription-level safety concern.

How Should Women Evaluate Supplement Safety With Their Oncology Team?

Practical steps for safe supplement evaluation include:

  1. Bring all current supplements – including vitamins, herbal teas, tinctures, and protein powders – to every oncology appointment
  2. Use institutional resources such as NCI’s CAM page and Memorial Sloan Kettering’s About Herbs database to check for known interactions
  3. Never start a new supplement during active chemotherapy, radiation, or targeted therapy without explicit oncologist approval
  4. Recognize that “natural” does not mean safe – many plant-derived compounds are pharmacologically potent and can alter drug metabolism

Can Diet or Nutrition Prevent Gynecologic Cancer Recurrence?

No special diet, food, vitamin, mineral, dietary supplement, or combination has been scientifically proven to cure cancer, slow its growth, or prevent recurrence. The National Cancer Institute states this clearly. However, nutritional counseling as part of an integrative oncology plan can meaningfully support treatment tolerance, recovery, and overall quality of life.

What Does the Evidence Say About Anti-Cancer Diets for Gynecologic Cancer?

Popular claims that ketogenic diets “starve” tumors, vegan diets cure cancer, or sugar-free protocols halt cancer growth lack clinical evidence at the level required for medical recommendation. While observational research suggests that overall dietary quality and nutritional status influence cancer outcomes, no specific dietary intervention has been validated in randomized controlled trials as a treatment for ovarian, cervical, or endometrial cancer.

Patients should be cautious about any diet promoted as a cancer treatment, particularly if it requires restricting calories to unhealthy levels during chemotherapy when the body requires adequate nutrition for immune function and tissue repair.

How Can Nutrition Support Quality of Life During Ovarian or Endometrial Cancer Treatment?

Practical nutritional support during gynecologic cancer treatment addresses weight management during platinum-based chemotherapy, gut health maintenance through treatment-induced digestive changes, appetite loss management, and adequate protein intake for surgical recovery. A registered dietitian working within an integrative oncology team can tailor dietary recommendations to each patient’s treatment phase, side-effect profile, and nutritional status without making unsupported curative claims.

What Unique Side Effects Do Gynecologic Cancer Patients Face – and How Can Integrative Medicine Help?

Gynecologic cancer patients face a distinct set of treatment side effects including surgical menopause after oophorectomy, pelvic floor dysfunction, sexual health changes, and psychosocial distress related to fertility loss and body-image disruption. Integrative therapies can address these gynecologic-specific challenges in ways that general oncology supportive care often overlooks.

How Can Integrative Therapies Address Surgical Menopause After Oophorectomy?

Removal of the ovaries triggers immediate surgical menopause, producing hot flashes, mood changes, sleep disruption, and accelerated bone density loss. When hormone replacement therapy is contraindicated – as it often is in hormone-sensitive gynecologic malignancies – integrative options become especially important. Acupuncture has evidence for reducing hot flash frequency and severity. Mind-body practices including meditation and yoga address mood instability and sleep problems. Weight-bearing exercise supports bone health during the accelerated loss phase following oophorectomy.

What Integrative Options Help With Pelvic Pain and Sexual Health After Gynecologic Cancer Surgery?

Pelvic floor rehabilitation, guided by a specialized physical therapist, is an evidence-based integrative approach for urinary symptoms, pelvic pain, and sexual dysfunction following radical hysterectomy or pelvic radiation. Yoga and gentle stretching can address pelvic tension. Massage therapy supports post-surgical tissue recovery. Psychological counseling – including couples therapy and sexual health counseling – is an essential and often underutilized component of integrative care for women navigating these intimate changes.

This area remains under-discussed in most general cancer integrative content, yet it profoundly affects quality of life for gynecologic cancer survivors. Women considering holistic treatment approaches for uterine and gynecologic cancers should seek centers that explicitly address pelvic health and sexual recovery as part of their integrative framework.

How Do Mind-Body Practices Support Emotional Recovery From Gynecologic Cancer?

Gynecologic cancers carry emotional weight that extends beyond the diagnosis itself. Fertility grief, loss of reproductive organs, changes in sexual identity and function, and relationship strain create a psychosocial landscape that general cancer support programs may not fully address. Mindfulness-based interventions, meditation, art therapy, and structured support groups – all recommended by the 2024 SIO-ASCO guidelines for anxiety and depression – can be tailored to these gynecologic-specific concerns.

The evidence base supports mind-body practices as first-line behavioral treatments for cancer-related anxiety and depression, making them a cornerstone of responsible integrative care for women with ovarian, cervical, and endometrial cancers.

What Should Women Look for in an Integrative Oncology Center for Gynecologic Cancer?

Women seeking integrative oncology for gynecologic cancer should look for centers that require coordination with conventional oncology, employ licensed medical professionals, use evidence-informed protocols tailored to specific cancer types and treatment regimens, and maintain full transparency about what integrative care can and cannot accomplish. These criteria distinguish responsible integrative oncology from unregulated alternative-medicine clinics.

What Questions Should You Ask Before Choosing a Holistic Cancer Treatment Provider?

Before committing to any integrative or holistic cancer care provider, women should ask:

  • Does this center require that I maintain my conventional oncology treatment?
  • Are the practitioners licensed medical professionals with oncology-specific training?
  • Are integrative protocols customized to my specific cancer type, stage, and treatment regimen?
  • Does the center communicate directly with my oncologist?
  • Are the therapies offered supported by peer-reviewed evidence?
  • Is there transparency about what integrative care can and cannot do?

Any provider that discourages conventional treatment, promises a cure through alternative means alone, or refuses to communicate with the patient’s oncology team should be approached with extreme caution.

How Does a Multidisciplinary Integrative Approach Work in Practice?

Integrative oncology, as defined in the Journal of the National Cancer Institute Monographs, is “a patient-centered, evidence-informed field of comprehensive cancer care that uses mind-body practices, natural products, and lifestyle modifications from different traditions alongside conventional cancer treatments.” In practice, this means a team that may include oncologists, integrative medicine physicians, acupuncturists, nutritionists, physical therapists, psychologists, and mind-body practitioners – all communicating about the patient’s unified care plan.

EuroMed Foundation of Arizona structures its holistic cancer treatment approach around this coordinated model, supporting women with gynecologic cancers through therapies that are designed to complement – never replace – their conventional medical care.

Frequently Asked Questions About Integrative Therapies for Gynecologic Cancer

Is It Safe to Take Turmeric or Curcumin Supplements During Chemotherapy for Ovarian Cancer?

Turmeric and curcumin supplements should not be taken during chemotherapy without explicit oncologist approval. Curcumin has potential CYP enzyme interactions that could alter chemotherapy drug metabolism, and no clinical trial has demonstrated an anti-tumor effect of curcumin supplements in ovarian cancer patients. Despite widespread community interest, the NCI’s dietary interactions guidance emphasizes that patients must discuss all supplements with their cancer care team before use.

Can Yoga or Meditation Replace Anti-Anxiety Medication During Cancer Treatment?

Mindfulness-based interventions and yoga are recommended by the 2024 SIO-ASCO guidelines as first-line behavioral treatments for cancer-related anxiety and depression. However, these practices should be discussed with the care team rather than self-substituted for prescribed psychiatric medications. Some patients may appropriately transition from pharmacological to behavioral approaches under professional guidance, while others benefit from combining both.

Does Insurance Cover Integrative Oncology Services?

Coverage varies by insurer and plan. Acupuncture is increasingly covered by major insurance plans, and many plans cover nutrition counseling and physical therapy – including pelvic floor rehabilitation – when prescribed by a physician. Patients should contact their insurance provider to verify coverage for specific integrative services and ask about out-of-network benefits when seeking specialized centers.

Are There Clinical Trials Studying Integrative Therapies for Gynecologic Cancer?

Yes – a growing number of clinical trials are investigating integrative therapies specifically for gynecologic cancer populations, including the Technion study on chemotherapy adherence in advanced gynecologic cancer. Patients can search ClinicalTrials.gov for current studies. Participating in clinical trials provides access to integrative care within a rigorous scientific framework while contributing to the evidence base that future patients will depend on.

How Soon After Gynecologic Cancer Diagnosis Can Integrative Therapies Begin?

Integrative therapies can begin at the time of diagnosis – before, during, and after treatment. The Technion study initiated integrative treatments concurrent with the start of chemotherapy. Early integration allows patients to establish mind-body practices, nutritional support, and physical conditioning before the most demanding phases of treatment. Coordination with the oncology team from the start ensures safety and timing alignment with surgery, chemotherapy, and radiation schedules. As women plan surgeries or treatment courses this summer, beginning integrative support early can establish a foundation for managing the months ahead.

What Is the Key Takeaway for Women Exploring Holistic Support During Gynecologic Cancer Treatment?

Integrative therapies can meaningfully improve quality of life, treatment tolerance, and emotional wellbeing for women with ovarian, cervical, and endometrial cancers – when used alongside, never instead of, conventional cancer treatment. The evidence supports mindfulness, acupuncture, exercise, yoga, and other modalities for managing the specific side effects and psychosocial challenges that gynecologic cancer patients face.

The data are equally clear about what does not work: patients who replace conventional treatment with alternative therapies face a 2.5 times greater risk of death. Responsible integrative oncology operates within this evidence, enhancing conventional care while respecting its essential role.

Women with gynecologic cancers deserve integrative support that is tailored to their unique treatment experiences – from surgical menopause and pelvic rehabilitation to fertility grief and chemotherapy adherence. EuroMed Foundation in Arizona provides holistic cancer care designed to complement conventional gynecologic oncology. If you or someone you love is navigating a gynecologic cancer diagnosis, reach out to EuroMed Foundation’s integrative oncology team to explore how evidence-based supportive therapies can be incorporated into your treatment plan.

Frequently Asked Questions

Can alternative medicine alone cure gynecologic cancer?

No – patients who replace conventional cancer treatment with alternative therapies face a 2.5 times greater risk of death, according to a landmark study published in the Journal of the National Cancer Institute. The 5-year survival rate for alternative-medicine-only patients was 54.7%, compared with 78.3% for those receiving conventional treatment. Integrative therapies should complement standard care, never replace it.

Is it safe to take herbal supplements during chemotherapy for ovarian cancer?

Many herbal supplements can interfere with gynecologic cancer treatments. St. John’s wort can dramatically reduce PARP inhibitor blood levels, and high-dose antioxidants may theoretically protect cancer cells from chemotherapy’s effects. The NCI warns that some supplements alter how cancer treatments function. Patients should bring all supplements to oncology appointments and never start a new one during active treatment without explicit oncologist approval.

Which integrative therapies have the strongest evidence for gynecologic cancer patients?

Mindfulness-based interventions, acupuncture, exercise therapy, yoga, and massage therapy have the strongest evidence, according to the 2024 SIO-ASCO guidelines based on over 400 randomized controlled trials. These therapies are recommended for managing anxiety, depression, fatigue, nausea, pain, and neuropathy – all common side effects during ovarian, cervical, and endometrial cancer treatment – when used alongside conventional care.

How soon after a gynecologic cancer diagnosis can integrative therapies begin?

Integrative therapies can begin at the time of diagnosis – before, during, and after treatment. The Technion study on advanced gynecologic cancer patients initiated integrative treatments concurrent with the start of chemotherapy. Early integration allows patients to establish mind-body practices, nutritional support, and physical conditioning before the most demanding treatment phases, with all therapies coordinated through the oncology team.

Can integrative oncology help women complete their full chemotherapy regimen?

Yes – a 2022 study from the Technion found that advanced gynecologic cancer patients (stage III/IV) who received weekly individualized integrative treatments during chemotherapy achieved better relative dose intensity, meaning they completed more of their planned chemotherapy. These patients also experienced lower rates of peripheral neuropathy and pain, making standard treatment more tolerable and completable.

How can integrative therapies help with surgical menopause after oophorectomy?

When hormone replacement therapy is contraindicated in gynecologic cancer patients, integrative options become especially important. Acupuncture has evidence for reducing hot flash frequency and severity. Mind-body practices including meditation and yoga address mood instability and sleep disruption. Weight-bearing exercise supports bone health during the accelerated bone density loss that follows oophorectomy. All approaches should be coordinated with the oncology team.

Can a special diet prevent gynecologic cancer recurrence?

No special diet, food, vitamin, mineral, or dietary supplement has been scientifically proven to cure cancer or prevent recurrence, according to the National Cancer Institute. Claims that ketogenic diets starve tumors or vegan diets cure cancer lack clinical evidence. However, nutritional counseling with a registered dietitian as part of an integrative plan can support treatment tolerance, surgical recovery, and overall quality of life during care.