Definition of supernal. 1  1a : being or coming from on highb : heavenly, ethereal supernal melodiesc : superlatively good supernal trumpet playing. 2  2 : located in or belonging to the sky.
Organic Foods. Organic eggs, oranges, grapefruit, lemons, vegetable juices, beef liver and kidney and sprouts derived from organic seeds are believed to increase thyroid activity, according to The Natural Health Place, a healthy living website.
Since iodine is an extremely important nutrient for the thyroid, you should eat your sea vegetables. Insufficient iodine levels can limit the production of thyroid hormones, which ultimately inhibits healthy thyroid function. The best sea vegetables to eat include spirulina, kelp, wakame, hijiki, or nori sheets. Brazil Nuts: