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Supplement: International Research Conference on Food, Nutrition, and Cancer

Nutritional Approaches to Late Toxicities of Adjuvant Chemotherapy in Breast Cancer Survivors¹

Edwin Rock^* and Angela DeMichele^*,,**,2

^* Division of Hematology Oncology, University of Pennsylvania School of Medicine, Rena Rowan Breast Center, and ^** Abramson Cancer Center of the University of Pennsylvania, Philadelphia, PA 19104

² To whom correspondence should be addressed. E-mail: dma{at}mail.med.upenn.edu.

Adjuvant chemotherapy of breast cancer reduces recurrence rates and prolongs survival at the cost of both acute and chronic toxicities. Breast cancer survivors who have received adjuvant chemotherapy may suffer from late effects of chemotherapy including congestive heart failure, neuropathy, premature menopause, and osteoporosis. Nutritional approaches to these problems are distinct in their orientation and success. Study of free radical scavengers for anthracycline-induced cardiomyopathy was born from known pathogenetic mechanisms of cardiotoxicity but has been universally disappointing thus far in clinical trials. Application of agents used for diabetic neuropathy suggests that evening primrose oil, -lipoic acid, and capsaicin may all play a role in the empiric options available to patients with chemotherapy-induced neuropathy. Plant-derived preparations including black cohosh (Actaea racemosa), dong quai (Angelica sinensis), evening primrose (Oenothera biennis), and red clover (Trifolium pretense) are used by patients experiencing hot flashes due to premature menopause despite a paucity of clinical trial data demonstrating either safety or efficacy. Calcium and vitamin D are widely accepted as an effective means to retard bone loss leading to osteoporosis. Nutritional approaches to late effects of breast cancer chemotherapy offer the prospect of preventing or ameliorating these sequelae of treatment. However, except for vitamin D and calcium for prevention of bone loss, current clinical evidence supporting use of nutritional agents remains sparse.

KEY WORDS: • nutrition • breast cancer • chemotherapy • survivorship

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