Grain-Free Diets: Benefits & Nutrition Facts

What Will You Learn?

Key Takeaways

Grain-free means no corn, wheat, rice, barley or other grains. It does not mean low-carb or healthier by default.
The FDA investigated a possible link between grain-free, legume-heavy diets and a heart condition called DCM in dogs.
More than 90 percent of the foods in the FDA's DCM reports were grain-free, and 93 percent contained peas or lentils.
The FDA has not proven that grain-free diets cause DCM, but many vets advise caution until more is known.
Most dogs with a food allergy are reacting to a protein, so a grain-free diet often does not fix the problem.

What are grain-free diets?

Grain-free diets are diets that exclude grains and instead focus on high-protein foods like meat, fish, eggs, and vegetables. They have become increasingly popular in recent years, especially for dogs and cats.

What are the potential benefits of grain-free diets?

May reduce risk of food allergies or sensitivities – Some pets may have allergies or trouble digesting grains
Can promote a healthier weight – Protein and fiber help pets feel full while consuming fewer calories
May support digestive health – Some pets see improvements in digestive issues when removing grains
Could lead to shinier coats and less shedding – Anecdotal reports, though more research is needed

What are some nutrition facts about grain-free diets?

Typically higher in protein – Often 30% or more of calories from protein
Lower in carbohydrates – Grains are replaced with vegetables, fruits, legumes
May be lower in synthetic nutrients – Some grain-free brands use fewer supplements
Variable fat content – Depends on the formula, with some high and some low fat

According to one 2021 analysis, the average grain-free formula contains 36% protein, 47% fat, and 14% net carbs. But there is variation across brands and recipes.

What ingredients are used in grain-free pet foods?

Common grain-free diet ingredients include:

Animal proteins: Chicken, beef, fish, turkey, eggs
Starchy vegetables: Potatoes, sweet potatoes, peas, chickpeas
Fruits and veggies: Blueberries, spinach, carrots, apples
Oils: Coconut, salmon, sunflower seed, olive oil
Supplements: Synthetic vitamins/minerals or nutraceuticals

Brands vary widely in formulas and ingredients. Checking the label is important.

The FDA investigated a possible link between grain-free diets and a heart condition called dilated cardiomyopathy, or DCM. In its reports, more than 90 percent of the foods eaten by affected dogs were grain-free, and 93 percent contained peas or lentils. The FDA has not proven that grain-free diets cause DCM, but many vets advise caution, especially for breeds already at risk.

What risks are associated with grain-free diets?

Potential for nutritional imbalances – Risk of missing key nutrients without careful formulation
Higher price tag – Grain-free diets typically cost 20-60% more than grain-inclusive
Possible link to canine heart disease – FDA is investigating, but more research is needed

Talk to your vet before switching, especially for pets with existing health conditions. Monitor your pet closely when transitioning foods.

Frequently asked questions

Are grain-free diets better for dogs?

Not by default. Grains are a digestible energy source for most dogs, and grain-free is a choice rather than a health upgrade. What matters is a complete and balanced diet.

What is the DCM concern?

The FDA investigated a possible link between grain-free, legume-heavy diets and dilated cardiomyopathy in dogs. It has not proven cause and effect, but many vets advise caution.

Do dogs get grain allergies?

True grain allergy is rare. Most food allergies in dogs are to a protein such as chicken or beef, so a grain-free diet often does not fix the problem.

What should I feed instead?

A complete and balanced diet from a brand that meets AAFCO standards and runs feeding trials. If you suspect a food allergy, ask your vet about an elimination diet.