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Micronutrients and cancer therapy
Martin A Whiteside1, Douglas C Heimburger, Gary L Johanning
1Cancer Prevention Fellowship Program, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD 20892, USA.
Nutrition Reviews
|May 15, 2004
Summary
Micronutrient supplementation may enhance chemotherapy effectiveness in lab studies, but clinical evidence is limited. Caution is advised for cancer patients undergoing chemotherapy due to insufficient clinical trials on nutrient and drug interactions.
Area of Science:
- Oncology
- Nutritional Science
- Pharmacology
Background:
- Cancer patients often receive chemotherapy, a treatment that can be influenced by nutritional status.
- Micronutrients, including vitamins and minerals, play crucial roles in cellular processes and immune function.
- The interaction between micronutrients and chemotherapy efficacy is an area of ongoing research.
Purpose of the Study:
- To review the current evidence on the impact of micronutrient supplementation on the effectiveness of cancer chemotherapeutic agents.
- To discuss the potential benefits and risks of using antioxidants, folic acid, and other vitamins and minerals in conjunction with chemotherapy.
- To highlight the need for more rigorous clinical trials to establish definitive recommendations.
Main Methods:
- Literature review of preclinical and clinical studies.
- Analysis of in vitro and in vivo data regarding micronutrient-chemotherapy interactions.
- Evaluation of the quality and outcomes of existing clinical trials.
Main Results:
- Some micronutrients, particularly antioxidants, have demonstrated potential to increase the cytotoxicity of anticancer drugs in laboratory settings (in vitro).
- However, robust clinical data supporting these findings in human patients undergoing chemotherapy is scarce.
- Few well-controlled clinical trials exist to confirm the efficacy of micronutrient supplementation in improving tumor sensitivity to chemotherapy.
Conclusions:
- While in vitro data suggests potential benefits, caution is warranted when considering micronutrient supplementation for cancer patients on chemotherapy.
- The lack of sufficient high-quality clinical trials necessitates careful consideration and further research before making widespread recommendations.
- Future research should focus on well-designed clinical trials to elucidate the complex interactions between micronutrients and chemotherapeutic agents.