Phytochemicals are bioactive secondary plant metabolites found in high concentrations in fruits, grains, and vegetables. Recent studies provide evidence of usage of plant-based diets rich in phytochemicals and their corelation to reduction in cancer incidence. Several phytochemicals have demonstrated effectiveness as chemotherapeutic agents against various cancers, including breast cancer. Breast cancer (BC) is a major worldwide medical issue owing to its high incidence, especially in women. It is the most often detected malignancy and an important trigger of mortality in women. Various chemotherapeutics along with radiotherapy are being investigated as potential treatment options for breast cancer. However, multidrug resistance, toxicity to normal cells, and other adverse effects limit the usage of chemotherapeutics in breast cancer. Cancer treatment with dietary phytochemicals is a highly effective approach that is currently gaining widespread attention. This manuscript intends to describe the existing data on the anticancer effects of various phytochemicals, including their preclinical exploration against breast cancer. Phytochemicals are broadly categorized, with an explanation of their role in breast cancer prognosis through various signalling pathways, preclinical status, physicochemical property analysis using Data Warrior, and evidence on individual phototherapeutics.
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