Lohan's puberty problems

Lindsay Lohan has blamed her fluctuating weight on puberty.

The sexy actress, who sparked concern last month after reportedly collapsing at her gym, also claims since turning 18 she decided to give up junk food - and started to lose weight.

She revealed: "I haven't been on a crash diet. I'm growing up and I just went through puberty a year ago - I'm 18 years old, give me a break.

"When I was doing 'Herbie' I was working a lot and pushing myself, and then I got sick because I wasn't taking care of myself. I was eating junk food and not working out and not being healthy. So now I work out and take care of myself."

The blonde star also said her family would never allow her to starve herself.

She added in an interview with Britain's Bliss magazine: "My mother would kill me if I did anything stupid - trust me!"