Best Anti-Cancer Supplements: Evidence-Based Guide (Updated 2026)
Best Anti-Cancer Supplements (2026): Evidence-Based Guide Cancer prevention and supportive care are areas of intense public interest — and confusion — when it comes to supplements. While many products are marketed as “anti-cancer,” scientific evidence varies widely by nutrient, cancer type, baseline health, and dosage. This 2026 evidence-based guide reviews the most studied supplements for cancer , including emerging data on selenium and pancreatic cancer , and clearly distinguishes: What has supportive evidence What remains unproven What may increase cancer risk Important: Supplements are not cancer treatments and should never replace evidence-based medical care. Some supplements may interfere with chemotherapy, radiation, or immunotherapy. Always consult a qualified clinician. AACR Cancer Progress Report 2023 / 2024 1. Vitamin D3 — Immune Regulation & Cancer Outcomes Vitamin D is one of the most extensively researched nutrients in oncology. Low vitamin D...