Carrie Underwood Took Dietary Supplements To Lose Weight After 'American Idol'

"It wasn’t the best way. If I could go back and talk to myself I’d be like, ‘Here’s how you do it the right way.'"

New mom Carrie Underwood recently sat down with People magazine to talk about her baby boy, Isaiah Michael Fisher, and the joys of motherhood. But the country singer also addressed body issues she's had in the past while trying to lose weight.

Underwood lost a considerable amount of weight after winning "American Idol" more than a decade ago, and admitted to People that she slimmed down in an unhealthy way. 

"I knew that I weighed more than I had ever weighed before," said Underwood. "But then as soon as you start making little tweaks, people immediately go, 'You look so great!' Then you start wondering, 'How bad did I look before?' Then it’s like, 'Well, I guess I should keep on going.' Then you start eating less."

The "Something in the Water" singer said she started taking dietary supplements to lose weight. 

"I was taking things with ephedra in it," she said. "It wasn’t the best way. If I could go back and talk to myself I’d be like, 'Here’s how you do it the right way.'"

According to the National Center for Complementary and Integrative Health, ephedra is commonly used to treat colds and headaches, but can also be used as a dietary supplement or for enhanced athletic performance

Though Underwood was as gorgeous as ever when she won "American Idol" in 2005, the country superstar says there's still one thing she regrets from her reality TV show days. 

"Oh hair! I tend to have a natural curl in my hair anyway, but not a whole lot," Underwood said in an interview with The Huffington Post.

"When I was in college I would put a lot of product in my hair and force it to be curly. And I definitely did that my first 'Idol' audition! I call it my 'crunchy' hair. That I might like to undo if I could."

Also on HuffPost: 

Carrie Underwood's Evolution

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