Dietary melatonin supplementation working in concert with the endogenous melatonin signal has the potential to be a new preventive/therapeutic strategy.

Electromagnetic field exposure could contribute to tamoxifen resistance observed in breast cancer after long-term treatment.

Melatonin (5 mg/ml per rat per day) is beneficial during advanced breast cancer in Sprague-Dawley rats with dimethylbezanthracene (DMBA).

Electromagnetic field exposure could contribute to tamoxifen resistance observed in breast cancer after long-term treatment.

Importance of SULT1A1 (sulfotransferase enzyme 1 A1) for the biotransformation of 6-OHMel (6-hydro-xymelatonin) in human breast cancer cells.

No abstract available.

No abstract available.

Night shift work and breast cancer risk collectively show an increased breast cancer risk among women.

Properties of melatonin as a resynchronizing agent insituations such as aging, blindness, shift work, night work, phase-advanced or phase-delayed sleep syndrome, and jet lag. Melatonin also has strong antioxidant properties, and an oncostatic action.

Age, reproductive and menopausal factors, body mass index (BMI), alcohol consumption, smoking history, night shift work were significantly related to lower levels of melatonin, whereas parity was significantly associated with higher aMT6s levels.