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Signs of an Under-active Thyroid & How can Nutrition Can Help.

Writer's picture: Claire JarvisClaire Jarvis

Updated: Jun 6, 2024

An under-active thyroid, also known as hypothyroidism, occurs when the thyroid gland does not produce enough thyroid hormones to meet the body's needs.



Thyroid hormones play a crucial role in regulating various bodily functions, so when they are insufficient, it can lead to a wide range of symptoms including:


  • Feeling excessively tired, even after getting enough sleep, is a hallmark symptom of hypothyroidism.


  • Unexplained weight gain or difficulty losing weight despite maintaining a healthy diet and exercise routine may be a sign of an under-active thyroid.


  • Feeling unusually cold, especially in the hands and feet, is a common symptom of hypothyroidism.


  • Slowed digestion and reduced bowel movements can result from an under-active thyroid.


  • Hypothyroidism can cause the skin to become dry, itchy, and rough.


  • Brittle hair that falls out easily and weak, brittle nails are potential signs of an under-active thyroid.


  • Hypothyroidism can lead to muscle weakness and aches.


  • Some individuals with hypothyroidism experience joint pain and stiffness.


  • Hypothyroidism can lead to mood swings, irritability, and depression.


  • Women may experience irregular menstrual cycles or heavier and more prolonged periods.


  • Difficulty with memory, focus, and mental clarity can be associated with an under-active thyroid.

Your thyroid gland is part of your endocrine system and plays an integral role in hormone production, regulation & distribution. It is essential for female gynaecological function and reproduction. Your thyroid gland is integral for our whole body to function both biologically and physiologically. Every cell in your body communicates with your thyroid therefore ensuring your thyroid function is optimal is often integral in female health.


Its important to note that these symptoms can vary in severity and may not all be present in every individual with hypothyroidism. If you suspect you may have an under-active thyroid or are experiencing any of these symptoms, it's essential to seek attention to test your thyroid, this can be done through your GP or I offer functional testing.


For some people medication, such as thyroxine is essential where as for others that are sub optimal in function, a holistic approach providing extra support can really make a difference. Learning to optimise and balance your thyroid, energy production and possibly your hormone production can be so valuable and make a big difference to your symptoms. For individuals with Hashimoto's Thyroiditis working to support the immune system and educate these clients how to optimise their diet, nutrition and lifestyle can be so beneficial.


Nutrition plays a vital role in supporting thyroid health by providing the necessary nutrients for the production and regulation of thyroid hormones. The thyroid gland requires specific vitamins, minerals, and other nutrients to function optimally.


I work with my clients to educate them how they can support their thyroid through nutrition, diet and lifestyle. I also find many clients are not taking their thyroid medication properly which can have a huge bearing on your symptoms and how you feel. Thyroxine can also interact with other medications and foods.


If you would like to start working with me to understand how you can can help and support your thyroid health, booking a free discovery call. I offer a range of packages in person or online to suit not only your needs, but also your budget.


nutritional therapist UK

I am a Nutritional Therapist offering one-to-one, in-person, or online consultations.


My Specialist areas include:

🥦 Menopause & Perimenopause

🍎 Female Hormonal Health

🥑 Migraines & Headaches

🫐 Digestive & Gut Health

🍋 Food Sensitivities & Special Diets

🍉 Energy & Vitality (including fibromyalgia & chronic conditions)


Naturopathic Nutrition's holistic approach to health & wellness recognises the interconnection between diet, nutrition, lifestyle & overall wellbeing to support the body's natural healing processes & provide necessary nutrients to help you optimise your health, & feel your best!



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