Sources:
https://www.sciencedirect.com/science/article/abs/pii/S0308814608006419
https://www.healthline.com/nutrition/cancer-fighting-foods
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4675518/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3988585/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4136551/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5187535/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6716971/
https://www.medicalnewstoday.com/articles/spinach-reduces-colon-cancer-risk-study-explores-how