According to GoodtoKnow, many pregnancy cravings are related to dietary deficiencies, and seaweed is no exception. The three types of edible seaweed — green, red, and especially brown seaweed — all contain high levels of iodine. The National Institutes of Health note that iodine is a mineral needed to make thyroid hormones, which play a crucial role in a variety of systems in the body. They also say that iodine is especially important for infants and pregnant women. Craving seaweed could be a sign that your body and growing bundle of joy aren’t getting enough of this essential mineral.
Another deficiency that could be linked to seaweed cravings is sodium deficiency. Many types of seaweed have a naturally salty flavor, while others contain added salt (via Time). Either way, these sea plants could hit the spot for pregnant women lacking sodium in their diets. HuffPost explains that it’s common to crave salty foods to maintain fluid balance, blood pressure, and other bodily functions while pregnant — all of which sodium is required.
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