Protocol · Cancer Support
General Cancer Care and Prevention Protocol
Vitamin D and Omega-3 Fatty Acids are the core of this stack, with 5 supporting supplements. Each row gives the amount the protocol lists and the grade our evidence database holds for that supplement in General Cancer Care and Prevention.
We are re-verifying the studies cited on protocol pages; only confirmed citations are shown.
The stack
7 supplements · 1 graded · 1 confirmed study
| Grade | Supplement | Amount listed | Why it’s in the stack | Evidence on file |
|---|---|---|---|---|
| Primary stackThe core of this protocol | ||||
| Vitamin D | Amount listed: 2,000–4,000 IU daily (target 40–60 ng/mL) | Regulates cell differentiation and apoptosis; deficiency associated with increased cancer risk for multiple malignancies | Not graded yet | |
Confirmed studies for Vitamin D (titles as PubMed lists them) | ||||
| Omega-3 Fatty Acids | Amount listed: 2–4 g EPA/DHA daily | Anti-inflammatory and may inhibit tumor cell proliferation; supports healthy weight maintenance during treatment | Not graded yet | |
| Supporting stackListed as additions to the core | ||||
| Curcumin | Amount listed: 500–2,000 mg daily (enhanced absorption formula) | Multi-targeted anticancer effects: inhibits NF-κB, induces apoptosis, inhibits angiogenesis and metastasis | Not graded yet | |
| Green Tea Extract (EGCG) | Amount listed: 300–600 mg EGCG daily | EGCG inhibits tumor growth pathways, induces apoptosis, and has antiangiogenic properties | Not graded yet | |
| Medicinal Mushrooms (Reishi, Turkey Tail) | Amount listed: 1–3 g extract daily (standardized to beta-glucans) | Beta-glucans enhance immune surveillance; may improve quality of life and immune function during cancer treatment
| Grade C for Immunity3 studies · 34 people | |
| Selenium | Amount listed: 100–200 mcg daily (do not exceed) | Essential for glutathione peroxidase; selenoproteins have antioxidant and potential anticancer effects | Not graded yet | |
| Probiotics | Amount listed: Multi-strain probiotic (10–50 billion CFU) daily | Supports gut health during treatment; may reduce treatment-related GI side effects and support immunity | Not graded yet | |
How this protocol works
In plain language
Cancer prevention and supportive care involves supporting the body's natural defenses while reducing factors that promote cancer development. This protocol focuses on evidence-based supplements that may help reduce cancer risk and support quality of life during and after cancer treatment. IMPORTANT: These supplements should complement, not replace, conventional cancer treatment. Always consult your oncologist before starting any supplements, as some may interact with cancer treatments.
- Vitamin D has extensive evidence linking deficiency to increased risk of colorectal, breast, and prostate cancers. Vitamin D regulates genes involved in cell growth, differentiation, and programmed cell death. The large VITAL trial showed vitamin D supplementation reduced cancer mortality, particularly in those who maintained adequate levels for several years. Most oncologists now recommend maintaining levels of 40-60 ng/mL.
- Omega-3 Fatty Acids have anti-inflammatory effects that may reduce cancer risk and help maintain healthy weight and muscle mass during treatment (cancer cachexia is a significant problem). They may also reduce inflammation associated with cancer progression. During treatment, omega-3s can help with appetite and nutritional status.
- Curcumin has been extensively studied for its anticancer properties in lab and animal studies, with growing human evidence. It works through multiple pathways—inhibiting NF-κB (a key inflammatory and cancer-promoting pathway), inducing apoptosis (programmed cell death) in cancer cells, and inhibiting tumor blood vessel growth. Clinical trials show it may enhance chemotherapy effectiveness and reduce side effects.
- Green Tea Extract (EGCG) contains catechins with demonstrated anticancer effects. Population studies show green tea drinkers have lower rates of certain cancers. EGCG inhibits tumor growth pathways and has been studied for preventing prostate cancer progression in men with precancerous changes.
- Medicinal Mushrooms (Reishi, Turkey Tail, Maitake) contain beta-glucans that stimulate immune cells (natural killer cells, macrophages) involved in cancer surveillance. Turkey Tail (PSK/PSP) is approved as an adjunct cancer therapy in Japan. These mushrooms may improve quality of life and immune function during conventional treatment.
- Selenium is essential for antioxidant enzymes. Some studies suggested selenium could reduce cancer risk, though the SELECT trial found no benefit (and possible harm at high doses) for prostate cancer. Current evidence suggests ensuring adequate (not excessive) selenium intake, primarily through diet.
- Probiotics support gut health, which is often compromised during cancer treatment. They may reduce antibiotic-associated diarrhea, radiation-induced GI symptoms, and support overall immune function.
Expected timeline: Prevention benefits require long-term use. Supportive care benefits may be noticeable within weeks of starting. Always inform your oncology team about all supplements.