There are multiple types of seaweed that are fit for human consumption, many of which can provide significant health benefits. Seaweed is packed with vitamins and minerals, and its powdered form allows for it to be added to many foods -- from smoothies to baked goods -- disguising the taste while still providing nutrients.
Vitamins and Minerals
Powdered seaweed, particularly kelp, is known as a superfood because it contains naturally high concentrations of vitamins and minerals. Seaweed contains concentrations of minerals, including copper, iodine and iron, which you cannot find in any other vegetables or foods. Powdered spirulina, a common type of seaweed, also has high concentrations of calcium, magnesium, potassium, niacin, vitamin A and vitamin K.
Antioxidants
While the content of antioxidant content varies between types of seaweed, some seaweed, like spirulina, contains such antioxidants as vitamin A, C, E, beta-carotene and selenium. When your body carries out its natural processes, such as metabolizing food into energy, it can produce free radicals, which damage your cells and immune system. Antioxidants protect your cells from damage caused by free radicals, helping prevent a variety of diseases. Adding powdered spirulina and other seaweeds to your diet may strengthen your immune system.
Cancer Prevention
The American Cancer Society says that seaweed and algaes may help prevent the development of certain cancers, such as breast and colon cancer. For example, women in Japan, who tend to eat diets heavier in seafood and sea plants and lighter in meat, have lower risks of breast cancer than American women. While additional factors, like dietary soy and teas, may be involved, preliminary evidence is promising. Adding small amounts of powdered or dried seaweed into your diet may help lower your risk of cancer.
Heart Benefits
Powdered seaweed also contains compounds known as sulfated polysaccharides, which are anti-inflammatory and anticoagulant, meaning that they can help your heart health. The sulfated polysaccharides help improve blood flow and lower your LDL cholesterol. In addition, seaweed like spirulina is naturally low in fat and cholesterol but high in protein. Replacing some of your fatty meats with a powdered seaweed shake or smoothie can cut your intake of fat and cholesterol, reducing your blood cholesterol levels.
References
- Weston A. Price Foundation; Guide to Superfoods; Sally Fallon et al.; December 1999
- Food and Agriculture Organization of the United Nations: Seaweeds Used as Human Food
- USDA National Nutrient Database: Seaweed, Spirulina, Dried -- 100 grams
- National Institutes of Health; Antioxidant Supplements for Health: An Introduction; March 2011
- American Cancer Society; Sea Vegetables; November 2008
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