Kelp has a number of natural mineral ingredients, including copper, iron, zinc, chromium, calcium and manganese, which are well-balanced compared to some mineral supplements. Kelp also contains folic acids, omega-3 fatty acids, soluble fiber, protein and vitamins A, B, C, D, E and K, which promote overall health.
While many foods contain calcium, kelp has one of the best forms of calcium, according to Lawrence Wilson, MD. Kelp has bioavailable iodine, which naturally mitigates relatively high risks of thyroid problems. Kelp is also non-toxic and does not build up in the liver, which is beneficial over other common sources of iodine.