The "Bridesmaids" star took to her Instagram Story on Monday, April 18, to slam a Daily Mail story claiming it knew the secret behind her body transformation.
"This was NEVER my diet, please stop writing this stuff," she wrote on social media.
In a separate post, she also added that she's "NEVER endorsed any diet pills or magic weight loss pills or cryptocurrency."
"If you see stuff like this online please report it as a scam – do not send it to me as a DM – report it on the social media site you see it on when you see it," she wrote. "If I'm endorsing something you'll see it only as official posts on my official and verified social media."
Rebel thanked fans for sticking with her through her health journey.
"It's really annoying when people use my image unlawfully or in misleading ways," she wrote. "Do NOT want anyone to get scammed. Love you guys xoxo."
According to Healthline, the Mayr Method emphasizes that breakfast should be the biggest meal of the day and recommends dieters stop eating after 7 p.m. Further, fruits, vegetables and high-protein foods are highly encouraged.
Back in January 2020, Rebel publicly proclaimed she was going to get healthier and had a goal weight of 165 pounds in mind. While it's not known exactly how much weight she's currently lost, she revealed in a July 2021 Instagram live that she's down "like 70 pounds, 75 pounds, maybe a bit more." It's believed that she's since lost even more weight.