If you have a slow-functioning thyroid (hypothyroidism), your diet can play a significant role in supporting thyroid function and overall well-being. Here are 7 key diet tips to help:
1. Get Enough Selenium
Selenium supports thyroid hormone metabolism. Good sources:
Brazil nuts (2-3 per day is enough)
Eggs
Tuna, sardines
Sunflower seeds
2. Avoid/ keep minimal goitrogen foods.
Goitrogens can disrupt thyroid hormone production by interfering with iodine uptake.
Cruciferous veggies (broccoli, kale, cabbage, cauliflower)
Soy products (tofu, soy milk)
Peanuts & millet
NOTE - Cooking these foods reduces their goitrogenic effects.
3. Choose Complex Carbs Over Simple Sugars
Refined carbs and sugar can lead to weight gain and blood sugar spikes. Instead, eat:
Sweet potatoes
Quinoa & brown rice
Legumes & beans
Whole grains (oats, barley)
4. Increase Omega-3 Fats
Omega-3s help reduce inflammation and support thyroid function. Include:
Fatty fish (salmon, sardines, trout). Keep this to about once or twice a month if your thyroid is slow.
Chia & flaxseeds
Walnuts
Algal oil (vegan option)
5. Stay Hydrated & Reduce Caffeine
Dehydration can slow metabolism. Drink plenty of water and reduce excess caffeine, which may interfere with thyroid function. Herbal teas and lemon water are good alternatives.
6. Avoid Ultra-Processed Foods & Excess Sugars
Packaged and processed foods can cause inflammation and weight gain. Avoid:
Fast food
Sugary cereals
Soda & energy drinks
Refined snacks (chips, pastries, biscuits)
7. Monitor Gluten & Dairy Sensitivity
Some people with thyroid issues (especially Hashimoto’s) may benefit from reducing or eliminating:
Gluten (wheat, barley, rye)
Dairy (milk, cheese, yogurt, butter)
Try an elimination diet to see if symptoms improve.
I generally recommend testing to see what the nutrient requirements of the body are, to support the body.
If you would like to know more about the testing services I offer, and how I work, please do get in touch for a FREE 15 minute call.
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