Actress lindsay lohan  has said she hit 'rock bottom' when her father started talking to the press three years ago.
The 23-year-old has revealed the full extent of her past drug addiction and said she almost lost her career because of it.
She said: 'When my father was going public, that's when I hit rock bottom. I abused substances too much, and it was the answer to my problems. People need to know that.
'I tried to mask my problems with alcohol, cocaine and mind-altering substances. Now I'm in a place where I don't need to use anything and I can feel emotions because I choose to.'
However, the star, who has recently been in London, said she wants to help others who are heading down that dangerous path.
She added: 'I learnt from my mistakes and I'm now healthy and happier, I never want to be close to losing everything I worked for and aspired to have my whole life.
'Mind-altering substances are so dangerous. If I can teach others, especially teens, by sharing my experiences, then that's what I will continue to do.
'I've made some dreadful mistakes but learnt from them - that has probably saved my life.'