Evidence supporting the use of: Kelp
For the health condition: Radiation Sickness

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Kelp, a type of seaweed, has been traditionally used in some cultures as a supportive remedy during or after radiation exposure. The main rationale for its use is its high iodine content. During nuclear accidents or radiation exposure, radioactive iodine can be released into the environment. The thyroid gland absorbs iodine from the bloodstream, and if an individual is exposed to radioactive iodine, the thyroid may absorb it, increasing the risk of thyroid cancer. Consuming non-radioactive (stable) iodine in sufficient amounts can saturate the thyroid gland, thereby reducing the uptake of radioactive iodine—a principle behind the use of potassium iodide (KI) tablets in nuclear emergencies.

Kelp is often promoted as a "natural" source of iodine and, by extension, as a possible protective agent against thyroid uptake of radioactive iodine. However, the iodine content in kelp is highly variable and sometimes excessive, which can cause thyroid dysfunction. More importantly, there is no direct scientific evidence that kelp itself is effective for treating or preventing radiation sickness. The only scientifically validated approach is the controlled administration of pharmaceutical-grade potassium iodide. Thus, while kelp's use is rooted in tradition and logical reasoning based on its iodine content, it lacks robust clinical evidence and is not recommended by health authorities as a primary means of protection against radiation sickness, especially given the risks of iodine overdose.

More about kelp
More about Radiation Sickness