ANSES, the French food safety agency, reported a case of liver decompensation, kidney failure and transplant in a 54 year old with pre existing liver disease who massively over consumed mass gainer and whey products.
The agency rated the supplement link very likely for the liver injury, implicating excess vitamin B3, vitamin A and protein.
Experts quoted in the reporting argue that scoop culture makes over consumption predictable and that on pack dosing guidance should be designed assuming foreseeable misuse.
The numbers
| Outcome | liver decompensation, kidney failure, liver transplant |
| Causality rating for liver injury | supplement link rated very likely by ANSES |
| Implicated excesses | vitamin B3, vitamin A and protein |
What this does not show
- That supplements at label doses did this. The case involved massive over consumption by a person with pre existing liver disease, not use as directed.
- Generalisable risk. A single case report. A causality rating of very likely for one patient cannot establish incidence or population level risk.
- Which ingredient was responsible. Excess vitamin B3, vitamin A and protein were implicated together; the reporting does not isolate one.
- That the policy conclusion is a finding. The argument that dosing guidance should assume foreseeable misuse comes from quoted experts. It is a design principle, not a measured result.
Caveats worth holding
- A single case, in a person with pre existing liver disease, involving massive over consumption. It says nothing about typical use.
- Known second hand through trade reporting of the ANSES report; consult the agency document before citing specifics.
- The foreseeable misuse framing is expert commentary attached to the case, not part of the causality assessment.