Kelly Clarkson Reveals Specific Health Diagnosis That Sparked Weight Loss

Kelly Clarkson is finally revealing the specific health diagnosis her doctor gave her which sparked her weight loss journey.

The 'American Idol'winner has opened up about her weight loss in the past, including telling fans about her diet and exercise routine. While she recently said a doctor's diagnosis is what made her have an entirely new mindset, she is now telling fans exactly what that diagnosis is.

While on her talk show, Clarkson was speaking to her guest, actor Kevin James, commenting on how great he looked, which then prompted James to return the compliments -- and that is when the 'Breakaway' singer revealed her doctor diagnosed her as pre-diabetic.

"Well, I was told I was pre-[diabetic]," Clarkson admitted on her talk show. "That was literally what happened … I wasn't like shocked. I was a tiny bit overweight," the singer added.

She went on to joke about the diagnosis, teasing, "They were like, you're pre-diabetic, you're right on the borderline. I was like, ‘But I’m not there yet!'"

"Then I waited two years," she admitted, but things continued to progress, and that's when she "did something about it."

Not only did she improve her physical health, but she also focused on bettering her mental health -- which meant moving from Los Angeles to New York.

"'I just can't stay here anymore for my mental health; for me and my kids,'" she recalls telling NBC of wanting to change locations. "They weren't doing well either. For the past few years, I'd just been showing up and smiling and doing what I'm supposed to do, but you can only compartmentalize so long until you break."

Part of the reason Clarkson's mental health began to take over was spurred by her divorce from her husband, Brandon Blackstock.

“The level of depression and things that come with divorce or grieving is extraordinarily hard,” Clarkson said after her nearly seven-year marriage came to an end.

“You feel alone, and it’s just a blessing to be able to have that outlet for those emotions that are overwhelming," she added.

Two years ago, Clarkson revealed she would be working on new music, which will be inspired by her divorce. “I’m working on this in therapy: I have a hard time vocalizing what I’m feeling sometimes, so music is helpful for me," she said before adding, "It’s just been healing. I recorded the record quite some time ago.”

Last month, Clarkson opened up about her diet and workout routine, which has helped her lose weight.

"Walking in the city is quite the workout," she told PEOPLE of moving to the Big Apple. "And I'm really into infrared saunas right now. And I just got a cold plunge because everybody wore me down."

Regarding her diet, she says it consists of "a healthy mix."

"I dropped weight because I've been listening to my doctor -- a couple of years I didn't," she said. "And 90 percent of the time I'm really good at it because a protein diet is good for me anyway. I'm a Texas girl, so I like meat -- sorry, vegetarians in the world!"