It’s really unclear how much iodine is contained in seaweed, but there is definitely no harm in eating it. Lack of iodine can cause malnutrition and reduced immunity.

The benefits of seaweed are not only in terms of nutrition, but its health care effects are also commendable.

British researchers discovered in the 1990s that some seaweed can kill cancer cells and enhance immunity. The phycobiliprotein contained in seaweed has application prospects for lowering blood sugar and anti-tumor; the polysaccharides in it have various biological activities such as anti-aging, lowering blood lipids, and anti-tumor. The alginic acid contained in seaweed can also help remove toxic metals from the human body, such as strontium and cadmium. Medical staff have also developed uniquely active marine medicines and health foods from seaweed, which can effectively prevent neurological aging and regulate the body's metabolism. In addition, seaweed can prevent and treat peptic ulcers, delay aging, and help women keep their skin smooth and healthy. Folks often let postpartum women eat some seaweed, which is said to have an obvious lactation effect.