Kelly Clarkson Reveals Secret to Recent Weight Loss & It's Not Exercise

Kelly Clarkson is opening up about her recent weight loss and what she credits for helping her slim down.

The 36-year-old singer started changing her eating habits due to an autoimmune disease and a thyroid issue she was dealing with.

“I literally read this book, and I did it for this autoimmune disease that I had and I had a thyroid issue, and now all my levels are back up. I’m not on medicine anymore because of this book, it’s called ‘The Plant Paradox (by Steven R. Gundry, MD).’ It’s basically about how we cook our food, non-GMO, no pesticides, eating really organic,” Kelly told Extra.

“Literally, I haven’t worked out at all!” Kelly added. “I think people think I’m working out and I’m like, ‘Don’t think I’m going to come play some sport!’”

See recent photos of Kelly in the gallery!