(Binge drinking is classed as more then eight units (four pints of beer) in one session for men and more than six units (six small glasses of wine) for women.
The recommended levels are two to three units of alcohol per day for women and three to four units for men and it's a good idea to have 2-3 alcohol free days each week.
This of course will go up and down like the proverbial yoyo depending on who is paying for the research.)