A federal judge has dealt a blow to plaintiffs seeking class action status for their claims against McDonald’s for health problems they allegedly developed by relying on the fast-food giant’s claims about the nutritional content of its burgers and fries.

Judge Donald C. Pogue of the U.S. Court of International Trade, sitting in the Southern District by designation, refused to certify a class action brought by regular consumers of Big Macs and other McDonald’s fare, saying that each plaintiff presents unique facts as to the elements of causation and injury.