http://vetnutrition.tufts.edu/2018/...e-or-grain-free-diets-and-exotic-ingredients/
Here's a link on some of the dog food stuff. Also, a little food for thought, average life span of a wolf in the wild is 6-8 years, we want our fur babies longer than that.
Not to be a Conspiracy Theorist or anything, but uh.
1.) No links to actual scientific studies - only to other articles published by Tufts itself. It is anecdotal evidence based on ONE case in specific, and generalities otherwise. Claims are unsubstantiated. Where are the articles / other practices to verify the claim that "Recently, some veterinary cardiologists have been reporting increased rates of DCM in dogs," as stated in the article? All of this is just being said. There's no outside evidence or scientific articles supporting it.
2.)
Hill's / Science Diet and Purina both are donors to Tuft's Veterinary Program. Of course they don't want anything saying that grain free is healthier; of course they want things that say it's less healthy. Corn costs less and they would love to fill their food with more of it and less meat.
3.) The article points to
home made diets being the cause, particularly
vegetarian diets being a cause due to a lack of taurine. Ironically enough, grain-based diets CANNOT contain NATURAL taurine, as (unless they use yeast, which is still a live culture), taurine is only found in meat. It is the reason cats need more (and why it is regulated in cat foods) - they are generally more carnivorous in their dietary needs than canines. I know cats can't produce it themselves - it MUST come from meat sources. I'm not sure if dogs can synthesize taurine or not, but I'd be willing to bet they need it as well from meat sources. Raw meat is also a better source than cooked meat - most cat foods, even those with nothing but meat, generally have taurine added to them BECAUSE cooking takes so much out of raw meat.
ANY food that fails to meet AAFCO standards is a hazard. There is no way to confirm that homemade diets are meeting nutritional needs - that's exactly what the article is getting at. Not that "grain free causes heart issues," it's that homemade diets are on the rise and are unbalanced because people are more into the
idea than the science.