It does not appear anyone has previously investigated this as a potential link.
A new FDA update provides more information on diet-associated dilated cardiomyopathy (DCM). While the specific cause is not yet known, the problem hasn’t gone away
Recently published research studies are shedding light on diet-associated dilated cardiomyopathy (DCM) in dogs.
True. The Consolidated Appropriations Act 2021 included a statement on how FDA should investigate grain free pet food/DCM.