Iodine Levels in Kelp: Benefits and Safe Consumption

Iodine Levels in Kelp: Understanding the Benefits and Safe Consumption

Kelp, a valuable source of iodine, offers numerous health benefits, contributing to thyroid function, cognitive health, energy metabolism, and more. Foraged & Found harnesses the power of bullwhip kelp (nereocystis leutkeana) in our products. Here's what you need to know about iodine levels in kelp and their safe consumption:

Health Benefits of Iodine in Kelp

  • Thyroid Function: Iodine supports the production of thyroid hormones, crucial for metabolism and growth.
  • Cognitive Function: Adequate iodine levels are linked to improved cognitive function.
  • Energy Metabolism: Iodine contributes to the efficient conversion of food into energy.
  • Skin Health: Iodine plays a role in maintaining healthy skin.
  • Nervous System: Iodine supports the proper functioning of the nervous system.

Monitoring Iodine Levels

Foraged & Found closely monitors iodine levels in our kelp products to ensure they meet safe daily levels. Our Hebridean Seagreens Organic Kelp capsules contain 350 micrograms of chelated iodine per capsule, a safe and beneficial amount for daily consumption.

Safe Iodine Intake

  • World Health Organization: Safe upper limit of 1100 mcg iodine per day.
  • US Institute of Medicine: Safe upper limit of 1100 mcg iodine per day.
  • UK Department of Health: Recommends not exceeding 1000 mcg iodine per day.

Natural vs. Synthetic Iodine

Kelp iodine, a natural form, has lower bioavailability than synthetic forms like potassium iodide. It is treated differently by the body, with about 33% excreted in urine within 24 hours.

When to Avoid Iodine

If you have a history of certain thyroid conditions or are taking medications for underactive thyroid, consult your doctor before increasing iodine intake.


The information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis, or treatment.


Iodine is a vital mineral, essential for various bodily functions. Kelp supplements can be a safe and effective way to maintain adequate iodine levels in your diet. Foraged & Found is committed to providing high-quality kelp products that offer both nutritional value and peace of mind.

References: Leung, A. M., & Braverman, L. E. (2014). Consequences of excess iodine. Nature Reviews. Endocrinology, 10(3), 136–142.