There are many diseases that are prevalent among both humans and animals. Although humans and animals do have anatomical differences, some disorders affect each in similar ways. Endocrine disorders affect many people and hypothyroidism in dogs, characterized by low thyroid function, is becoming more common. Indications like reduced energy, vitality, and growth are common indicators something may be off. Although there is a prescription drug market for pets, research suggests natural remedies are available.
What is Hypothyroidism?
Hypothyroidism, a condition in which the thyroid gland does not produce enough thyroid hormone, can occur in dogs. When your dog’s thyroid isn’t working correctly, it can create health issues and unnecessary suffering.  Behavioral changes are common in dogs suffering with hypothyroidism; unfortunately, aggression is commonly reported. When a puppy's thyroid is off, delayed or abnormal growth is likely.  Additional symptoms of hypothyroidism in dogs include:
- Weight gain
- Slower heart rate
- Weak muscles
- Hair loss
- Chronic ear infections
- Eye issues
- Intolerance to cold
Causes of Hypothyroidism
Hypothyroidism occurs most often in middle-aged and geriatric dogs; genetic predisposition is thought to be a primary cause.  However, the disorder may be caused by an autoimmune mechanism within the body. Known as autoimmune thyroiditis, the body mistakenly attacks thyroid tissue.  
More commonly, however, veterinarians believe the main contributing cause of hypothyroidism in dogs is the consumption of a processed, grain-based, high-carbohydrate diet. It seems that the concern with dog food is similar to the concern with most people food, they lack the essential minerals the thyroid requires – namely iodine and zinc.   
Natural Remedies for Hypothyroidism in Dogs
Natural remedies for thyroid issues have become more popular as pet owners have become more skeptical about pharmaceutical treatments – both their effect and cost. While medicine has its place, many people seek to at least inquire about the natural and holistic options. Plants like fenugreek, stinging nettle, and kelp are some of the better choices for promoting normal thyroid function. 
Known for its great flavor, fenugreek is as common in the kitchen as it is in the cabinet of natural remedies. But how does fenugreek help an underperforming thyroid? Well, in the case of autoimmune thyroiditis, research suggests fenugreek has the ability to inhibit T3 and T4 hormone levels that are directly responsible. 
Kelp and seaweed are popular among people who wish to nourish their thyroid. Why? Because sea vegetables are an amazing source of iodine, the nutrient the gland needs in order to produce thyroid hormone. There's no law that says sea vegetables are for humans only; add to your pet's food and allow them to experience the benefits too!
Astragalus is a Chinese herb best known for its ability to promote normal blood pressure and blood sugar. It is also used to revitalize the endocrine system and the thyroid gland. 
Stinging nettle has many uses as a natural remedy. It's used to regulate metabolism, balance thyroid and adrenal glands. Nettle is also very nutritionally dense. It's a good source of antioxidant compounds and protective vitamins like A, B, and C. 
Stopping concerns before they start is easier than dealing with them once they've got a foot in the door. Taking inventory of your pet's diet is a great place to begin. Since selenium and iodine deficiency may be involved in some cases of hypothyroidism in dogs, supplementing your pet's diet with these nutrients may be something to consider.
Additionally, if you don't already, consider cutting out the nutritionally deficient store-bought pet food and just make your own. It's not that hard and a natural, raw or cooked grain-free diet devoid of processed ingredients can provide higher-quality nutrients your pet needs for good health.
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†Results may vary. Information and statements made are for education purposes and are not intended to replace the advice of your doctor. If you have a severe medical condition or health concern, see your physician.