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.
2. Increase iodine intake â Iodine-rich food or supplements will help your thyroid maintain hormonal balance. Dietary sources of iodine include yogurt, sea vegetables, and eggs. Cooking beans with kombu and eating different types of seaweed are good ways to naturally increase iodine.