She has previously hit out at Khloe Kardashian and Cardi B for promoting detox teas.
And on Monday, Jameela Jamil took to Twitter to critisise Iggy Azalea for also promoting the weight loss drinks on social media.
The British actress, 32, shared tweets with her 406,000 followers and proved she wasn't holding back: 'Another double agent for the patriarchy bites the dust... When will these women who are covered in plastic surgery stop telling their followers to drink a laxative to look like them?
'It’s so embarrassing and it’s so encouraging of eating dirsordered behavior. BE BETTER ALLIES!'
The Good Place actress discussed her own struggle with weight loss and said that as a teenager she 'starved herself for years' and previously used the 'miracle cures and laxatives' but said she's since been left with 'digestion and metabolism problems for life'.
Before she added: 'I damaged my fertility, I was consumed and mentally ill. I was obsessed and didn't eat a meal for over three years as a growing teen'.
She went on to admit: 'I am not going to stop coming after all the people, men and women, who perpetuate this gross culture of forcing women to remain small and doll-like in order to be accepted by society.
Telling it straight: Jameela took to Twitter to share her thoughts on the detox tea promotion and accused those endorsing of 'encouraging of eating disordered behaviour'
And ended by telling Iggy: 'If you tell your fans to be thinner, you don’t love your fans. You don’t give a s**t about them or their mental health or self worth'.
She also said: 'I was the teenager who starved herself for years, who spent all her money on these miracle cures and laxatives and tips from celebrities on how to maintain a weight that was lower than what my body wanted it to be. I was sick, I have had digestion and metabolism problems for life.
Jameela's anger comes as rapper Iggy, 28, shared a picture of herself on Instagram on Monday clad in a plunging black bra and claimed meal replacement shakes were the secret behind her toned tummy.
She wrote: 'Y'all can't even hate on it. Flat Tummy Shake's meal replacement shakes have gotten me more definition in my tummy without losing my a**, and they're 20 per cent off right now.'
Unhealthy: Jameela went as far to tell Iggy 'you don't love your fans'
While many of Iggy's fans praised her with comments including 'beautiful' and 'looking good,' others criticised the blonde for sending an unhealthy message.
'Please stop doing this. Young girls that follow you are getting the wrong message and giving them false hopes. Feminism my a**,' one directed at Iggy.
Another followed suit with: 'Please stop harming young girls. It's not okay'.
TV personality Perez Hilton hit back at Jameela after he said: 'If the detox tea people offered me money to promote them, I’m taking that cash!! I got kids! This Jameela Jamil and her holier than thou attitude!'
Criticism: Jameela took to Twitter urging Iggy, Cardi B, Amber Rose and Khloé Kardashian, who have all promoted weight loss shakes, to get honest with their fans
This prompted the brunette star to reply with: 'That’s a sad truth Perez Hilton and awful you don’t care about young people, other people’s kids, who get so f***ed up by this stuff. By the time a diet company WANTS you to promote their product, you’re already doing better than most and don’t need the laxative cash for ur kids [sic]'.
The outburst comes as Jameela slammed Khloe Kardashian and Cardi B on Saturday for promoting detox teas on their social media.
She didn't hold back as she laid into the brands' 'poisonous rhetoric' and claimed the teas 'give you diarrhea' and not healthy weight loss.
The worst: Jameela attacks stars who promote detox style teas for weightloss
In response to Khloe Kardashian sharing a paid for promo for a detox beverage, the radio presenter wrote: 'Some thoughts I have about @flattummyco being flogged this morning to prey on the RIDICULOUS shame women are made to feel when they indulge on days like Thanksgiving.
'I hate this company and it’s poisonous rhetoric that is only marketed at young girls and their branding is all pink. They are just the worst.'
She shared a longer missive on the topic, scribing: 'These "weight loss" products like Flat Tummy Co, don’t make you thinner. They make you s**t. They give you diarrhea, which then gives you a flatter tummy for a day. THAT’S ALL.
'Please unfollow celebrities who try to push this nonsense on you.'
It's not personal: The 32-year-old actress didn't hold back as she laid into the brands' 'poisonous rhetoric' and claimed the teas 'give you diarrhea' and not healthy weight loss after Khloe posted an ad on Friday
Bad for you: She slammed the use of laxatives for weight loss
Not holding back: The Good Place beauty also condemned the Kardashian's obsession with their looks
Not Okurrr: The actress also brought Cardi B into the debate
She made it clear that her wrath was not directly aimed at Khloe, although had some pretty harsh words to say about her family.
'I don’t hate on Khloe because that poor woman has been conditioned/outright bullied by her own family and the press to believe being thin is the most important thing in the world,' she wrote.
'That is a sad pursuit and we are all worth so much more than this,' she added.
Hard at work: Cardi B posted a revealing video to her Instagram on Friday which plugged a detox tea
Back to shape: During the video, the talented hip hop artist said she did not 'have liposuction' but 'worked hard' to get back her 'stripper body'
'Laxatives are BAD for you,' she continued, 'Tying your worth to your weight or the flatness of your tummy is empty and a waste of your brilliant mind! it's a lie you were sold so that you would spend as much time as the Kardashian's OBSESSING over your looks and buying expensive products to help "fix" what was never broken.
'Please look at the bigger picture and love yourself,' she concluded.
In a separate post, Jamil focussed on rapper Cardi B for hawking a different product on her own Instagram page.
'They got Cardi B on the laxative nonsense "detox" tea. GOD I hope all these celebrities all s**t their pants in public, the way the poor women who buy this nonsense upon their recommendation do. Not that they actually take this s**t. They just flog it because they need MORE MONEY.'
She added: 'Generally just don’t ever take diet advice from women who know nothing about nutrition/basic advertising ethics. IF you want to get healthier, talk to a trainer/doctor.'
Unfollow! Jamil urged her followers to stop following those who promote these kinds of products
The UK native is currently promoting season three of The Good Place, which premiered September 27.
Jameela plays Tahani, a wealthy British socialite, who lands in The Bad Place unexpectedly.
Meanwhile Jameela has used the press opportunities to talk about her I Weigh social media movement.
'It's a revolution against shame. It's a page where women weigh themselves in their achievements, in their values, in their family, in their jobs, in their education,' she explained.
'Finally we're not going to reduce women down to just a number on a scale.It's time we take our place as one half of the world and value ourselves as round, multi-faceted individuals.'
© Associated Newspapers Ltd.