Tips to Boost Thyroid Hormones🧵

Cortisol, glucagon, and adrenaline inhibit thyroid hormone conversion, reducing the amount of active thyroid hormone (T3) and increasing reverse T3, which creates a vicious cycle.

Common, often easily corrected causes of high cortisol and adrenaline:

> Lack of quality sleep
> Lack of carbohydrates
> Lack of sodium
> Lack of potassium
> Lack of magnesium
> Lack of calcium
> Fasting
> Chronic caloric restriction
> Noise pollution
> Shallow breathing
> Black coffee on an empty stomach
> Constant media/device stimulation

Other things that may help:

> Vitamin C from acerola powder
> L-Theanine
> Glycine

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Get Sufficient Iodine:

Iodine is essential for thyroid hormone synthesis. Deficiency can lead to low thyroid levels and may increase future thyroid issues, sometimes triggered by rapid high-dose iodine repletion.

High doses can cause hypothyroidism, hyperthyroidism, or autoimmunity in susceptible individuals. Risk factors include low iodine, low selenium, and genetics. The RDA is 150mcg; intakes above 300mcg daily may pose risks. High-dose iodine from X-ray contrast media can also trigger thyroid issues in vulnerable people.

Seafood and dairy are good sources.

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Ensure Adequate Energy Availability:

The thyroid adjusts to energy availability. Insufficient energy intake or chronic overexertion reduces thyroid hormone production, whether at the gland, peripheral conversion, or tissue resistance.

Undereating or excessive exercise can impair thyroid function, lowering the metabolic rate.

Combining fasting with intense exercise is a recipe for trouble, sooner or later. Focus exercise on muscle building or retention, and design your diet to support metabolism.

Mild, careful caloric restriction, balanced with periods of adequate caloric intake, can minimize the risk of thyroid downregulation and long-term dysfunction.

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Limit Goitrogens:

Goitrogens are substances that cause visible swelling of the thyroid (goiter) at high doses, but they can interfere with thyroid hormone levels even before a goiter is visible.

Cruciferous vegetables and soy-based products are the main offenders.

Cooking reduces goitrogens, so raw or lightly cooked foods are more risky.

Iodine insufficiency increases the effect of goitrogens.

Increase The Ratio of Saturated to Unsaturated Fats
Unsaturated fats, especially polyunsaturated fats from seed oils and non-ruminant animals fed high-PUFA diets, disrupt thyroid hormone metabolism by reducing production, transport, and binding.

These fats are released as free fatty acids in large amounts during stress, making both dietary intake and stress management key factors in thyroid dysfunction.

Eat mostly saturated fats:

Coconut oil
Cocoa butter
Butter/ghee
Cream and cheese
Beef fat/tallow

Most importantly!

Avoid highly polyunsaturated fats:

Soybean oil
Rapeseed/canola oil
Sunflower seed oil
Peanut oil
Cottonseed oil
Corn oil
Safflower oil
Grapeseed oil
Flaxseed soil
Hemp oil
Chia seed oil
Evening primrose oil
Fish oil

Minimize Exposure to Plastics and Plasticizers:

Compounds like phthalates and BPA/S/F in plastics impair thyroid gland function and peripheral thyroid hormone conversion. BPA also blocks thyroid hormone at the receptor level.

Common sources:
Cosmetics with "fragrance" or "parfum" (may contain hidden phthalates)
Plastic food containers
Plastic bottles, including BPA-free ones
Linings of canned foods and beverages
Household dust
Thermal paper receipts

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