We all know that drinking, drugs and fast food are bad for you, but these days a life of excess isn't just leaving young people hungover, it's accelerating their age .br br Series in which Cherry Healey investigates the alarming rise in numbers of young people suffering from illnesses associated with older people due to alcohol, .br br Cherry Healey meets medical experts who are treating young recovering alcoholics like Jo, who has a badly damaged liver and Mat, who had to have a liver .br br BBC Science Documentary Old Before My Time Drugs Documentary .