What did @drmichaelsays actually say?
The creator, who identifies as a medical doctor, made one specific clinical claim: if you have Wilson's disease, you "cannot take GHK-Cu" because the copper in the peptide will accumulate in the brain, liver, and eyes. He also took a shot at influencer kickback culture and positioned himself as a more honest voice in the peptide space. The actual medical warning about Wilson's disease is the only testable, concrete claim in the video, and it deserves a straight answer.
He called GHK-Cu a "tripeptide" and a "copper peptide," and noted that the body normally regulates copper well, but that Wilson's disease disrupts that regulation. The rest of the video was light on specifics, heavy on self-promotion toward his YouTube channel. The Wilson's disease warning, however, is specific enough to fact-check properly.
Does the science back this up?
Yes, the core claim is scientifically sound. Wilson's disease is an autosomal recessive disorder caused by mutations in the ATP7B gene, which encodes a copper-transporting ATPase. Without functional ATP7B, copper accumulates in the liver, brain, cornea, and other organs, exactly as the creator describes. Adding exogenous copper, even in peptide-bound form, is genuinely contraindicated.
GHK-Cu is glycyl-L-histidyl-L-lysine complexed with copper(II). Research by Pickart and Margolina (2018, Symmetry) documents that GHK-Cu promotes copper uptake in tissue and influences copper-dependent enzyme activity. In a person with normal ATP7B function, the body handles this. In a Wilson's disease patient, that clearance mechanism is broken. Brewer (2009, Annals of the New York Academy of Sciences) reviewed copper metabolism in Wilson's disease and confirmed that any source of supplemental copper, whether dietary or therapeutic, represents a clinical risk in unmanaged or undertreated patients. The creator's framing is not alarmist, it is medically reasonable.
What did they get wrong (or right)?
He got the Wilson's disease warning right. Credit where it is due: this is a genuine contraindication that almost no peptide influencer mentions. However, there are two places where he oversimplifies in ways worth flagging.
First, he says your body is "pretty good at regulating your copper levels normally." That is true but incomplete. Copper homeostasis is tightly controlled, but subclinical copper imbalances, including in people who do not have Wilson's disease, can occur with high-dose supplementation. A blanket "your body handles it" framing could give false reassurance to people with other copper-metabolism issues, such as those with liver disease or Menkes disease carriers.
Second, the claim that peptides are "probably" the future of medicine is stated as a confident near-certainty. That is a stretch. Some peptide-based therapeutics, like GLP-1 receptor agonists, have strong clinical evidence. GHK-Cu specifically has preclinical and in vitro data, including wound healing and anti-inflammatory effects documented by Pickart et al., but no large-scale randomized controlled trials in humans yet. Saying peptides broadly are the future of medicine, while also acknowledging "right now, no," is a contradiction worth noting.
What should you actually know?
Wilson's disease affects roughly 1 in 30,000 people worldwide, according to Ala et al. (2007, Lancet). If you have it and are not being managed by a hepatologist or neurologist, you should not be experimenting with any copper-containing compound, including GHK-Cu. That is not a controversial position.
Beyond Wilson's disease, there are practical gaps the video does not cover:
- GHK-Cu has not been studied in long-term human trials at supplementation doses. Preclinical data from Pickart and Margolina (2018) is promising but not definitive.
- People with undiagnosed liver disease, even mild fibrosis, may also have impaired copper clearance. The video presents Wilson's disease as the only contraindication, which is likely an oversimplification.
- Compounded injectable peptides, which are what most peptide buyers are actually purchasing, carry their own safety and sterility risks entirely separate from the pharmacology of GHK-Cu itself.
- The influencer kickback point he raises is real. The FTC requires disclosure of paid partnerships, and many peptide promoters do not comply.
The core safety message here is correct. But one accurate warning does not mean the broader peptide landscape, to the extent it exists as a category, rests on solid clinical evidence. Verify with a provider who has access to your full medical history before using any peptide supplement.