Resumen
Cancer-related fatigue is a common distressing complaint of breast cancer patients treated with chemotherapy. Nutritional quality plays a pivotal role in cancer-related fatigue, while increased interest towards new pharmacological agents has been observed. Melatonin, an endogenous hormone that regulates the human sleep?wake cycle, could alleviate cancer-related fatigue. In the present human trial, we investigated the effects of melatonin intake (i.e., 1 mg/day) vs. placebo on fatigue in women with active breast cancer over a period of 3 months. In both groups, nutritional advice regarding the Mediterranean diet was implemented. At the trial endpoint, the results showed that only patients receiving melatonin improved cancer-related fatigue compared to baseline. This implies that the oral supplementation of melatonin could ameliorate fatigue in breast cancer patients who undergo chemotherapy treatment.