21 August 2017:
The Bible says that 'wine makes people happy'. Alcohol seems an inbred constituent of human nutrition, and so many studies have pin-pointed its various health benefits and risks. Usually, the bottom-line recommendation favors alcohol consumption, but limiting it to 'drink in moderation', in order to avoid the potential serious adverse outcomes of heavy and lasting drinking. A new report from the World Cancer Research Fund and the American Institute for Cancer Research addresses 'diet, nutrition, physical activity and breast cancer' . The report states that there is strong evidence that consuming alcohol increases the risk for premenopausal and postmenopausal breast cancer.
This has been known, of course, but interestingly, while reviewing the literature, it seems that no threshold has been detected. Dose-response meta-analysis showed that each 10 g of ethanol per day increase the risk of breast cancer by 5% in premenopausal women, and by 9% in postmenopausal women. To note, in the premenopause, only North American studies have demonstrated a statistically significant result, whereas European or Asian studies were in the same direction, but still non-significant. The bottom line of these data means that even just one drink per day, equivalent to 10 g of alcohol, already carries a higher risk for breast cancer. The recommendation was thus clear – 'it is best to avoid alcohol, but if alcohol is consumed, the amount should be limited'.