12.4 Complementary & Integrative Modalities

Terms the Exam Expects You to Know

• Complementary: used alongside conventional treatment (for example, acupuncture for joint pain during aromatase inhibitor therapy).
• Alternative: used instead of conventional treatment. Choosing alternative medicine alone is associated with markedly worse survival; one national database study found patients who used only alternative medicine had about 2.5 times the risk of death, with an even larger gap in breast cancer.
• Integrative oncology: patient-centered, evidence-informed use of mind-body practices, natural products, and lifestyle changes coordinated with conventional care.

More than half of people with breast cancer use some complementary approach, and many do not tell their clinicians. Nurses should ask every patient, without judgment, at intake and at each treatment change.

What the Guidelines Support

The Society for Integrative Oncology (SIO) breast cancer guideline, endorsed by ASCO, and later joint ASCO-SIO guidelines give the strongest support to mind-body approaches:

Safety Modifications

Acupuncture

Avoid needling a limb with lymphedema or at high risk after axillary dissection, areas over tumor or open wounds, and sites near prosthetic implants. Use caution with severe neutropenia or thrombocytopenia; many programs hold acupuncture for very low counts per institutional thresholds.

Oncology Massage

Massage does not spread cancer, a common myth. Trained oncology massage therapists use light pressure and avoid:

• Deep pressure on a lymphedematous or at-risk arm (manual lymphatic drainage by a certified therapist is different and appropriate).
• Surgical incisions, drains, radiation-damaged skin, ports, and catheters.
• Known bone metastases (fracture risk) and areas of deep vein thrombosis.
• Firm pressure when platelets are low.

Reiki and Energy Therapies

Reiki uses light or no touch and is generally safe. Nurses can support a patient's choice for comfort while making sure it does not replace or delay recommended treatment.

Nutrition and Natural Products

A registered dietitian is the right referral for nutrition questions. Key safety points:

• Antioxidant supplements during chemotherapy: in the SWOG S0221 cohort, taking antioxidants (vitamins A, C, E, carotenoids, coenzyme Q10) before and during chemotherapy was associated with a higher risk of recurrence; vitamin B12, iron, and omega-3 use were also associated with worse outcomes. Advise food sources rather than high-dose supplements during treatment.
• St. John's wort induces CYP3A4, lowering levels of docetaxel, CDK4/6 inhibitors, and tamoxifen metabolites.
• Grapefruit and Seville orange inhibit CYP3A4 and raise levels of palbociclib, ribociclib, and other oral agents.
• Turmeric (curcumin), ginkgo, fish oil, and high-dose vitamin E can increase bleeding risk around surgery and with low platelets.
• Green tea extract and black cohosh have reports of liver injury.
• High-dose soy isoflavone supplements are not recommended, even though soy foods are safe.
• Acetyl-L-carnitine should not be used to prevent chemotherapy-induced neuropathy; a SWOG trial found it increased neuropathy, and ASCO recommends against it.

Reliable references include the NIH National Center for Complementary and Integrative Health and the Memorial Sloan Kettering About Herbs database.

Nursing Role

1. Ask every patient about supplements, herbs, special diets, and practitioners, and document them on the medication list.
2. Screen for interactions with the pharmacist, especially before oral targeted therapy and surgery.
3. Guide patients toward evidence-supported, licensed practitioners and away from costly unproven "cures."
4. Respect cultural and personal values; many patients use integrative care to regain a sense of control.
5. Watch for patients who delay or refuse effective treatment in favor of alternative-only approaches, and have an open conversation about risks.

Talking With Patients About Integrative Therapies

Patients are more likely to disclose use when asked in a nonjudgmental way: "Many people use vitamins, herbs, special diets, or therapies such as acupuncture or massage. What are you using or thinking about?" Document everything on the medication list so pharmacists can screen interactions.

Practical timing rules:

• Before surgery: many teams ask patients to stop herbal supplements that affect bleeding or anesthesia (such as ginkgo, garlic supplements, fish oil, vitamin E, and turmeric) about 1 to 2 weeks before surgery.
• During radiation: check any topical product applied to treated skin with the radiation team.
• With oral targeted therapy: review grapefruit, St. John's wort, and other CYP3A4 modifiers before the first dose.

Remind patients that "natural" does not mean "safe" or "effective," and that costly products promising cures are red flags. Integrative oncology programs at many cancer centers offer evidence-based services with trained practitioners.

Case Example

A patient on palbociclib and letrozole drinks grapefruit juice each morning and has started St. John's wort for low mood. Grapefruit raises palbociclib levels, while St. John's wort lowers them and can also interact with antidepressants. The nurse alerts the prescriber and pharmacist, advises avoiding both, and screens for depression so mood can be treated with an appropriate therapy.