Share Increased alcohol intake was linked to less grey matter in the brain, more fat in the liver and a larger mass in the left ventricle of the heart, said a study led by Imperial College London It suggests those who try to drink responsibly, below 14 units a week – the equivalent of six medium glasses of wine – still damage their bodies. Professor Paul Elliott, from the UK Dementia Research Institute at Imperial, said: ‘We recommend current health guidelines are reconsidered.’ Professor Paul Matthews, co-author of the study published in the journal eLife, said: ‘This study graphically highlights harmful effects of alcohol even when consumed in moderation.’