Jamie Lynn Spears Sparks Health Fears With Fast Food Binges

Jamie Lynn Spears' constant fast food binges have caused pals to fear for the new mom's health.

Jamie Lynn, 17, has become addicted to greasy burgers and fries since her daughter, Maddie, was born on June 19 -- causing friends to worry about the effect her unhealthy appetite is having on the teen star's body.

A source reveals, "Jamie Lynn says she has been so busy with the baby she has not been looking after herself and instead of eating healthily has been gorging on burgers and fries - too often than is good for her.

"Everyone thinks she has been comfort eating because of the stress of being a new mum and on top of that she is having to deal with all the rumors that Casey Aldridge has been cheating on her.

"She needs to start looking after herself better. Not just for herself but she has baby Maddie to think of now too."

Jamie Lynn's sister, Britney Spears, reportedly believes that her younger sibling is too young to get married.

A source recently told In Touch Weekly magazine, "(Britney) is worried for her and doesn't want Jamie Lynn to make the same mistakes she did with Kevin Federline. She thinks she’s way too young to marry Casey – especially if he’s been cheating."