It looks like Lindsay Lohan's parents aren't the only ones urging her to eat more food.

It may not have been McDonalds - as recommended by mum Dina - but the Mean Girls actress spent the evening dining out with girlfriend Samantha Ronson yesterday.

The couple headed out to Genghis Cohen, a Chinese restaurant in Los Angeles.

Lindsay has sparked concern for her health after stepping out looking painfully thin in recent weeks - and now her parents have voiced their fears that she is not looking after herself properly.

Her mother Dina recently urged Lindsay to "eat more McDonalds" and now her estranged dad is weighing in.

Appearing on U.S. breakfast show Good Day Philadelphia yesterday, Michael Lohan said, "Lindsay goes through her fluctuations in weight for different roles she's in, and travelling and what she's eating and taking care of herself."

"I'll talk to her about it - I'll see what's going on."

But her dad admits he has a troubled relationship with his daughter, because of his public disapproval of her romance with Samantha.

He adds, "(Our relationship) has been a little strained because of her relationship with Samantha, but we do communicate."

Lindsay hasn't been looking her best and looks quite ill and lacking vitamins around her face.

See Lindsay's weight diary below