The RDA (recommended dietary allowance) for iodine, aged 14 and up, is 150 mcg. The following link shows that mean levels of iodine in the US population and elsewhere have fallen quite a bit since the 1970s, and lists some of the reasons why: intake of less salt and/or iodized salt, removal of iodine from breads, reduced intake of cow's milk, etc.
People following the SCD diet often take the SCD-legal multivitamin - on www.lucyskitchen.com
it says you should take only one pill a day ot this multivitamin supplement, not the full three pills. This means, instead of getting the 150 mcg iodine included in the three pills, you will get only 50 mcg iodine...not enough to meet the RDA. So can you get enough from food? Maybe not, according to the following links which list the amount of iodine available in the most iodine-rich foods, and talk more about
why this vitamin is necessary:
For those on the SCD multivitamin, I do NOT recommend taking more than the one recommended pill a day, because you could end up with too high a dose of other vitamins or minerals. My own daughter takes it, and she will probably add just one pill a day of iodine, since she doesn't get enough from food sources or the multivitamin.
For anybody else, just check your own food intake and the ingredients in your own multivitamin, to make sure you get enough. And no, more than 150 mcg is not better and can be toxic (like almost any supplement). We are staying away from kelp, since it is not SCD-legal - the best SCD-legal potassium iodide source we could find was from Purecaps, and the indicated dosage was two pills a day for slightly over 200 mcg. SO instead she will take one pill a day, which includes just over 100 mcg, and get the rest from her yogurt and other food sources.
Daughter (22) Dx'd Crohn's 3/06. Misdiagnosed for two years, including by top pediatric Crohn's specialist as stress. No symptoms for the past two years. Recent colonoscopy shows stricture gone but still two spots of inflammation in TI. On Entocort since April 06. Never had D. Now using LDN to taper off Entocort. SCD multivitamin, homemade yogurt, 2000IU vitamin D3, 900+ mg calcium, 25 mg iron, monthly B12 shots, Krill capsules, occasional zinc. SCD diet modified to include potatoes and rice.