These figures derive from population studies showing the relationship of self reported levels of drinking to risk of harm. It is arbitrary which point on the risk curve is deemed to merit a Other authorities have quoted weekly recommended upper limits for alcohol consumption of 21 units per week for men and 14 units per week for Consuming over 40 g/day alcohol on average doubles a man s risk for liver disease, raised blood pressure, some cancers (for which smoking is a confounding factor) and violent death (because some people who have this average alcohol consumption drink heavily on some days). For women, over 24 g/day.
