Jordin Sparks

A health commentator has earned the wrath of Jordin Sparks' fans, after suggesting that the young American Idol winner needs to lose weight.

MeMe Roth, of the group National Action Against Obesity, said she has received death threats since appearing on U.S. television and declaring the 17-year-old Arizona native overweight.

"When I look at Jordin I see diabetes, I see heart disease, I see high cholesterol," said Roth. "That's what's so sad about this - she is not the vision of health - she is the vision of 'unhealth.'"

Roth added that while she never called Sparks "obese," and admires the singer's talent and "effervescent personality," she typifies many modern U.S. children who have compromised their health through poor food choices and inactivity.

Roth said "You'll also find Miss Sparks to be quite contradictory. In her latest People Magazine interview, she's declaring to 'love her body' just as it is, while at the same time, in the sidebar, advising other 'plus-size' females on how to dress slim."