Aye, I think I had heard similar before which is why I am going to keep it down to single figure units once or twice a week. What seems a bit incongruous with past experiences is keeping it to 2 or 3 units in a day. For years many people I know and I have gone way over that for extended periods and while I cannot say with no ill effects I can state that, generally, our bodies seem to cope with it admirably. I think alcohol tolerance varies greatly between people and a blanket recommendation does not take account of personal differences. Some cannot have any while some can process large amounts. I put my own capacity down to my East European heritage :-)