Abstract
Breast cancer (BC) is the leading cause of death among women with cancer worldwide. Nevertheless, key challenges must be addressed, as new therapies can be employed to support the main treatment and enable a better quality of life, survival and prognosis. In this paper, we described the role of omega-3 and vitamin D supplementation in patients during the main treatment. This is a systematic review of the literature from randomized clinical trials, following the PRISMA and PICOS guidelines for elaborating the guiding question and constructing the results. Our findings in this review reveal and support that omega-3 and vitamin D supplementation can help women with metastatic disease who are not receiving hormone therapy during BC treatment for HR+ (hormone receptor positive). They improve immunity and antioxidant capacity and decrease cardiometabolic effects. This intervention is safe and can be employed as an adjuvant to the other main treatments.
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