Earlier this week the 32-year-old upset her followers, who were quick to question why she would promote a fad diet programme, after being an advocate for body positivity for so many years.
"Seeing you promote diet culture is breaking my heart," one fan said.
"You have an organ [liver] that detoxes your body. Cleanses and detoxes are scams, this is actually really disappointing to see," another fan wrote.
"Whaaat?! No no no! Detoxes don't work and they definitely do not promote body positivity," another wrote.
Some fans even thought that Lizzo was joking about the diet because it's so unlike her to promote any type of diet.
Lizzo recently shared a TikTok video where she was feeling down about her body.
"I came home, and I took my clothes off to take a shower, and I just started having all of these really negative thoughts about myself.
"Like, you know, 'What's wrong with me?' Maybe everything, all the mean things people say about me are true. And, you know, 'Why am I so disgusting?' and hating my body."
"Normally I would have some positive thing to say to get me out of this, but I don't, and that's OK too," she added. "I think these are normal. They happen to everybody. They happen to the best of us. We are the best of us. And I just have to know that tomorrow how I feel in here [she pointed to her head] is gonna change.
"And I can only hope that it changes for the better. But I know I'm beautiful, I just don't feel it. But I know I'm going to get through it."