The 26-year-old, who has been in and out of jail and rehab in recent years, was said to have put her dark days behind by making a comeback with Elizabeth Taylor TV biopic, 'Liz & Dick'.
However, Lohan has been in the news recently after she was arrested in New York for allegedly clipping a pedestrian with her car, reported TMZ Online.
She again hit headlines this week after cops were called to her family home in Long Island to investigate allegations after an argument with her mother, Dina, had turned nasty.
Lohan was asked whether she is sober, and she replied, "Yes I am. And I'm happy and I'm healthy."
She also insisted the argument with her mother was blown completely out of proportion.
"I'm really regretful about the argument that I had with my mother and I said very hurtful things in the heat of the moment. I am very close with my mom and siblings. We're tight-knit. We support each other and we love each other," she added.