Fasting causes cancer cells to die in human patients.

Is it true that fasting causes cancer cells to die in human patients?

Partly. The retrieved items only partially address the claim: reviews and preclinical studies suggest fasting or fasting-mimicking diets may make cancer cells vulnerable or reduce their viability in cell and mouse models, while a human meta-analysis found no benefit of fasting for chemotherapy toxicity and a mouse study found hematopoietic cells survive starvation. No item reports cancer cell death in human patients.

Verdict: CONTESTED PARTIAL · 4 sources for, 2 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Singh, A., Tomar, A., & L, A. Y. (2026). CAN FASTING HELP TREAT CANCER? RESEARCH GIVES HOPE.. zenodo.org. https://doi.org/10.5281/zenodo.20117564

Ferro, Y., Maurotti, S., Tarsitano, M. G., Lodari, O., Pujia, R., Mazza, E., Lascala, L., Russo, R., Pujia, A., & Montalcini, T. (2023). Therapeutic Fasting in Reducing Chemotherapy Side Effects in Cancer Patients: A Systematic Review and Meta-Analysis.. doi.org. https://doi.org/10.3390/nu15122666

Fasting inhibits hepatic stellate cells activation and potentiates anti‐cancer activity of Sorafenib in hepatocellular cancer cells. (n.d.). cir.nii.ac.jp. https://doi.org/10.1002/jcp.25987

Shelechi, M., Fanti, M., Guiliani, G., & Longo, V. (2025). In vitro efficacy of Fasting Mimicking Conditions combined with targeting of starvation escape pathways against prostate cancer cells. doi.org. https://doi.org/10.1101/2025.08.27.672470

Fasting and cancer: molecular mechanisms and clinical application - PMC Lock. (n.d.). pmc.ncbi.nlm.nih.gov. https://doi.org/10.1038/s41568-018-0061-0

Short-Term Fasting Induces Cell Cycle Arrest in Immature Hematopoietic Cells and Increases the Number of Naïve T Cells in the Bone Marrow of Mice. (n.d.). cir.nii.ac.jp. https://doi.org/10.1159/000496096