Many conditions can cause poor thyroid function, including inflammation, hormonal imbalances, and chronic stress. (functionalhealthnews.com)
Chapter Nine Don't Forget About the Brain — Sometimes the root of poor thyroid health is in the brain. (thyroidbook.com)
Reasons for poor thyroid gland function may be genetics, pregnancy, stress, lack of nutrients, toxins in the environment, but experts are still not completely sure. (fitnessandpower.com)