What did @tattedmummaofficialx actually say?
She's one week into what she calls "radar" (likely a brand or shorthand for a peptide compound) and reports losing two kilograms. She's also taking GHK-Cu, a copper peptide, and is transparent that she hasn't seen results from it yet. She promotes her supplier using a discount code.
To her credit, she doesn't claim peptides cured anything or promise specific outcomes for viewers. She says "I'm not putting a gun to your head" and frames her experience as personal. But she does say the weight loss means it's "doing what it needs to do" and gives a strong supplier recommendation tied to a referral code, which is where things get complicated. The combination of anecdote, commercial incentive, and a two-kilo figure presented as meaningful data deserves scrutiny.
Does the science back up two kilos of fat loss in one week?
Maybe, but not necessarily in the way she implies. Two kilograms in seven days is real weight movement, but it almost certainly isn't two kilograms of fat. The science here is worth unpacking carefully.
If "radar" refers to a GLP-1 receptor agonist peptide analog, such as semaglutide or tirzepatide (commonly sourced through unregulated peptide suppliers), early weight loss in week one is largely water and glycogen, not adipose tissue. A kilogram of fat requires roughly a 7,700 calorie deficit. Losing two kilograms of fat in seven days would require a deficit of over 15,000 calories, which is physiologically implausible for most people. Wilding et al. (2021, New England Journal of Medicine) found that semaglutide produced meaningful fat loss over 68 weeks, not one. If the compound is something like AOD-9604 or a growth hormone fragment, the evidence base is even thinner. AOD-9604 failed to show significant fat loss in human trials (Heffernan et al., 2001, Journal of Clinical Endocrinology and Metabolism). The two-kilo figure is real. What it represents is not established.
What did she get wrong, and what did she get right?
She got the GHK-Cu framing roughly right. GHK-Cu does have a lag period in skin remodeling research. Pickart and Margolina (2018, Cosmetics) found it stimulates collagen synthesis and wound healing, but these are gradual processes. Saying "your skin can look worse before it looks better" is a reasonable expectation to set, even if the evidence for dramatic skin transformation in healthy adults is limited.
Where she goes wrong is treating one week of scale movement as confirmation that a product is "doing what it needs to do." That's not how you interpret early data. She also has a financial relationship with the supplier via a discount code, which she discloses, but that conflict of interest shapes the entire framing of the video. Recommending a specific unregulated supplier because he's "really helpful" is not a safety credential. Peptides sourced outside pharmaceutical-grade supply chains carry real contamination and mislabeling risks (Cohen et al., 2020, JAMA Internal Medicine).
What should you actually know before trying this?
Peptide products sold through influencer codes are not the same as regulated pharmaceuticals. Full stop. The supplier being "helpful with questions" does not replace clinical oversight, blood work, or a licensed prescriber who knows your history.
Weight loss in week one of almost any intervention, dietary change, or new compound is mostly water weight. It is not a reliable signal that a product works for fat loss. If the compound is an unlicensed GLP-1 analog, there are real risks including nausea, pancreatitis, thyroid effects, and unknown long-term consequences from unverified purity. GHK-Cu has a more benign safety profile in topical and low-dose forms, but injectable GHK-Cu from unregulated sources introduces sterility concerns. Anyone considering peptide therapy should be doing so through a licensed telehealth provider or physician, with regular monitoring, not through a TikTok discount code.