When Tonia Brown’s weight reached 380 pounds, she was frustrated.

“I was getting tired of it. I wanted to lose some weight,” the 51-year-old from Shelby, North Carolina, tells TODAY.com. “I wanted to start taking better care of myself because I was getting older and starting to feel it.”

About eight years ago, Brown started eating a ketogenic diet and walking around the house. When her twin sister Tonie Ervin noticed Brown losing weight, Ervin examined her own habits.

“I realized that I was going to become the fatter twin,” Ervin, 51, of Shelby, North Carolina, tells TODAY.com. “(I) started doing keto and exercising because she made me.”

In total, the two have shed nearly 400 pounds with keto, exercise and bariatric surgery.

“It really, really helps to have Sister with me doing it bec

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