This organic New Zealand Kelp Sea Salt is nutritionally enhanced by the addition of raw kelp seaweed, harvested from the pristine waters around the North Island of New Zealand. The easiest way to increase your iodine intake is to replace table salt with Kelp Sea Salt – a naturally iodised alternative. Kelp is widely regarded as the best natural, most concentrated source of iodine – an essential nutrient for human health – specifically linked to immunity, thyroid, brain, ovarian and breast health. Iodine is an essential nutrient for the production of a hormone called thyroxin which helps to regulate many body functions.