Food Allergies in Dogs - A Complete Guide

Many people think their dogs have allergies but not sure about it.  Diagnosis usually requires careful observation and sometimes the assistance of a veterinarian. Here’s a guide to help you understand and manage food allergies in dogs.

Signs of Food Allergies in Dogs

Dogs with food allergies might have a variety of symptoms, including:

• Itchy Skin: Especially around the face, paws, ears, and anus.
• Chronic Ear Infections: Frequent and recurrent ear infections.
• Gastrointestinal Issues: Vomiting, diarrhea, or chronic gas.
• Red, Inflamed, Itchy Skin: Areas of the skin, eyes and mouth may become red, inflamed and/or itchy.
• Hair Loss: Excessive scratching can lead to hair loss.
• Frequent Licking: Particularly of the paws or other affected areas.
• Behavioral Changes: Increased irritability or discomfort.

Diagnosing Food Allergies

Veterinary Consultation: Always start with a visit to your vet. They may suggest an elimination diet or other diagnostic tests.

Elimination Diet: This involves feeding your dog a novel protein (one they have never eaten before) and a single carbohydrate source for 8-12 weeks. Common novel proteins include duck, venison, or fish. Avoid treats, flavored medications, and other foods during this period.

Reintroduction: If symptoms improve on the elimination diet, reintroduce old foods one at a time to identify the offending ingredient.

Managing Food Allergies

Once an allergy is identified, managing your dog's diet is crucial:

Commercial Hypoallergenic Dog Food: These are specially formulated to avoid common allergens. Options include:

a) Hydrolyzed Protein Diets: Proteins are broken down into smaller fragments, so the immune system will not consider the fragments as foreign particles and attack them. The smaller the protein molecules, the more effective it is to avoid allergic reaction.

b) Limited Ingredient Diets (LID): Contain fewer ingredients to minimize the risk of an allergic reaction. Using novel proteins can also help to reduce the chance of allergies. However, different meat sources may share the same allergens reducing the effectiveness of the diet.

Homemade Diets: With guidance from a vet or nutritionist, you can prepare homemade diets to ensure all allergens are avoided and your dog gets balanced nutrition.

Foods to Avoid

Common allergens in dogs include:

- Beef

- Chicken

- Dairy

- Eggs

- Soy

- Wheat

Safe Treats for Food Allergies

Single-Ingredient Treats:

Dehydrated Meat: Single-ingredient treats like dehydrated or freeze dried venison, duck, or fish.

Vegetable Treats: Dehydrated or freeze dried sweet potatoes or green beans.

Hypoallergenic Treats:

Commercial Hypoallergenic Treats: Look for treats specifically labeled as hypoallergenic, which often use novel or hydrolyzed proteins and minimal ingredients.

Supplements for Food Allergies

Omega-3 Fatty Acids:

Anti-inflammatory: Found in fish oil, flaxseed oil, krill oil, omega-3s can help reduce inflammation and support skin health.

Skin and Coat Health: Improves the health of the skin and coat, reducing symptoms of allergies.

Probiotics:

Gut Health: Probiotics support a healthy gut microbiome, which can improve digestion and reduce gastrointestinal symptoms associated with food allergies.

Immune Support: A healthy gut microbiome can enhance the immune system’s ability to manage allergic reactions.

Vitamin Supplements:

Vitamin E:

Antioxidant Properties: Helps protect cells from damage and supports skin health.

Anti-inflammatory: Can reduce inflammation associated with allergic reactions.

Vitamin C:

Immune Support: Boosts the immune system and can help reduce histamine levels.

Antioxidant: Protects against cellular damage and supports overall health.

Vitamin A:

Skin Health: Essential for maintaining healthy skin and mucous membranes.

Immune Function: Supports the immune system, helping to manage allergic responses.

Vitamin D:

Immune Regulation: Plays a role in modulating the immune response and can help reduce the severity of allergic reactions.

Mineral Supplements

Zinc:

Skin Health: Essential for healthy skin and coat, and can help with wound healing.

Immune Function: Supports the immune system and can help reduce inflammation.

Selenium:

Antioxidant: Works with vitamin E to protect cells from oxidative damage.

Immune Support: Important for a healthy immune response.

Food Allergies vs Food Intolerance

Food allergies and food intolerance in dogs are both adverse reactions to food, but they differ in their underlying mechanisms and symptoms. Understanding these differences is key to managing your dog's diet and health effectively.

Food Intolerance

Food intolerance refers to a non-immune-mediated adverse reaction to a particular food or ingredient. It's often due to an inability to properly digest or metabolize certain substances. Common causes include enzyme deficiencies, food additives, or naturally occurring compounds in food.

Symptoms of Food Intolerance

- Gastrointestinal Issues: Diarrhea, vomiting, gas, or bloating.

- Gradual Onset: Symptoms may develop slowly over time.

- Dose-Dependent: Symptoms often depend on the amount of the offending food ingested.

Food Allergies

Food allergies are immune-mediated responses where the dog's immune system mistakenly identifies a protein in the food as a threat and mounts an allergic reaction. This can cause inflammation and other symptoms.

Symptoms of Food Allergies

- Skin Issues: Itchy skin, rashes, hives, chronic ear infections.

- Gastrointestinal Issues: Vomiting, diarrhea (though less common than in intolerances).

- Immediate or Delayed Onset: Symptoms can appear quickly or after prolonged exposure.

- Consistent Reaction: Even small amounts of the allergen can trigger a reaction.

Key Differences

Managing Food Allergies vs Food Intolerance

Both food allergies and food intolerance can be managed by identifying the offending ingredients and avoiding them.  Dietary adjustments using hypoallergenic food (hydrolyzed protein diets or limited ingredient diets) is often necessary.  In some cases, you may need the assistance of veterinarians for testing and routine monitoring.

In short, food intolerance only involve gastrointestinal symptoms and food allergies are systemic and involve different organs, such as skin, ears and digestive tract.

Hydrolyzed Protein Diet

Hydrolyzed protein diets are specially formulated dog foods where proteins are broken down into smaller fragments (peptides or amino acids) to reduce the likelihood of triggering an allergic reaction.  The smaller the protein fragments, the more effective it is to avoid allergies. Hydrolyzed diets can be beneficial for dogs with food allergies or severe food intolerances.  In fact, it is the most effective commercial dog food to combat allergies.

Benefits of Hydrolyzed Protein Diets

Reduced Allergenicity:

By breaking down proteins into smaller fragments, the dog’s immune system is less likely to recognize and react to them as allergens.  The smaller the protein molecules, the more effective it is to prevent immune responses.

Effective for managing food allergies and preventing allergic reactions.

Diagnostic Tool:

Useful in elimination diets to identify food allergies. If symptoms improve on a hydrolyzed protein diet, it indicates a likely food allergy.

Improved Digestibility:

Hydrolyzed proteins are easier to digest, making these diets beneficial for dogs with gastrointestinal sensitivities.

Balanced Nutrition:

These diets are formulated to provide complete and balanced nutrition, ensuring that dogs receive all necessary nutrients even while on a restricted diet.

Palatability:

Many hydrolyzed protein diets are designed to be palatable, encouraging dogs to eat even if they have previously been picky or had poor appetites due to food sensitivities.

Disadvantages of Hydrolyzed Protein Diets

Cost:

Hydrolyzed protein diets are generally more expensive than regular dog food due to the processing involved in breaking down the proteins.

Availability:

These diets may not be as widely available as other types of dog food and are often only available through veterinary channels or specialty pet stores.

Taste:

While many hydrolyzed diets are designed to be palatable, some dogs may still find them less appealing compared to their regular food.

Transition Period:

Dogs may need time to adjust to a new diet, and the transition period can sometimes result in temporary gastrointestinal upset.

Not a Cure-All:

Hydrolyzed diets manage symptoms but do not cure food allergies or intolerances. Long-term management includes ongoing avoidance of allergens.

Possible Additives:

Some hydrolyzed diets may still contain additives, preservatives, or other ingredients that could potentially cause issues in highly sensitive dogs.

Conclusion:

Food allergies are diagnosed with careful observation and sometimes with the help of a veterinarian.  Diet is an important factor to control food allergies.  The most effective commercial diet for food allergies and food intolerances is hydrolyzed protein diet.  However, they come with higher costs and availability issues. Gradual transition to new diet is necessary to prevent gastrointestinal issues.

LaMer Dr Heal Skin Care Diet is a hydrolyzed protein diet specially formulated to prevent and alleviate the symptoms of food allergies.  The food is very tasty and readily accepted by most picky eaters.  LaMer Dr Heal Skin Care Diet is the no 1 hypoallergenic dog food in veterinary hospitals in S Korea.  The main source of protein is hydrolyzed chicken meat.  Since the chicken proteins are broken down to small molecules of peptides and amino acids, the immune system will not consider them as a threat to attack them.  It is suitable for dogs allergic to all sort of meat protein.  LaMer dog food is naturally preserved by wild berries and does not include any food additives, artificial colors and flavors.

LaMer Dr Heal Skin Care Dog Food is available in Wise Pet eshop and HKTVMall, you can enjoy door to door delivery and the food is much more affordable than the prescription hydrolyzed protein diet.

LaMer Dr Heal Skin Dog Food (Wise Pet eshop)

LaMer Dr Heal Skin Hypoallergenic Dog Food (HKTVMall)