In 2018, the FDA began investigating whether the increasing popularity of grain-free dog foods had led to a sudden rise in a potentially fatal heart disease in dogs. Four years later, the FDA has reached no conclusion, but the publicity surrounding the issue has shrunk the once-promising market for grain-free dog foods. A six-month investigation has found that a tangled web of industry funding and interests influenced the origin, data collection, and course of the FDA study. Makers of grain-free dog foods and their suppliers, in turn, have exerted pressure on the FDA to protect their market share.
How canine heart disease was tied to grain-free dog food
