Gillian McKeith's Food Bible (252 page)

HYPOTHYROIDISM

Hypothyroidism refers to an underactive thyroid, meaning the thyroid does not produce sufficient quantities of thyroid hormones. As the thyroid hormones control our metabolic rate (the rate at which we burn up calories for energy), a deficiency of them can result in fatigue, weight gain, low appetite, feeling cold, slow heart rate, weakness, constipation, and depression. Other symptoms often associated with hypothyroidism include dry, yellowy-colored skin, goiter (an enlargement of the thyroid), hair loss, loss of the outer third of the eyebrows, and brain fog.

CAUSES

In hypothyroidism, there may be a lack of thyroid hormones or there may be a problem with the conversion of thyroid hormones into their active form. Another contributory factor may be the presence of thyroid antibodies that suppress thyroid function. It is not known why any of the above would happen. Lack of certain nutrients needed for thyroid hormone production is one contributory factor. Lack of exercise, food intolerances, and disturbances in the rest of the endocrine system may also be involved.

Action plan

If you suffer from the above symptoms, ask your GP to test your thyroid function. The following may help those with symptoms of an underactive thyroid.

EAT/DRINK

Sea vegetables, which contain iodine needed for the production of thyroid hormones. Kelp and nori are particularly useful.

Brazil nuts, as they are one of the best sources of selenium, which is also needed for thyroid function.

Fresh fruits, vegetables, nuts, seeds, whole grains, pulses, and fish contain the essential fats, B vitamins, zinc, vitamin C, and magnesium. Thyroid malfunction is often the result of chronic adrenal stress, which leads to deficiencies in the above.

Water: at least eight glasses daily. Fluid levels are vital for the whole endocrine system, including the thyroid.

AVOID

Wheat. The gliadin in wheat can be toxic to the thyroid and is best avoided. Some people do best without the other gluten grains as well (oats, rye, barley, kamut, and spelt).

Raw cruciferous vegetables (broccoli, cabbage, kale, cauliflower, rutabagas), soy, and millet. These can all be goitregenic (suppress thyroid function). The cruciferous vegetables are fine if cooked, and fermented soy in moderation is fine (natto, miso, tempeh, and tamari).

I have observed that avoiding challenging products like salt, caffeine, and dairy for a while helps.

Sugar, refined carbohydrates, processed foods, and alcohol are all empty calories and can lead to easy weight gain.

Fluorine and chlorine. These are both chemically similar to iodine and can displace iodine in the thyroid. Fluorine is found in many toothpastes, tap water, and tea. Chlorine is found in tap water and swimming pools. It is best to filter your water and use fluoride-free toothpaste.