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Thyroid. 2016 Sep;26(9):1308-10. doi: 10.1089/thy.2016.0239. Epub 2016 Aug 9.

Iodine Content in Milk Alternatives.

Author information

1
1 Department of Biological Sciences, Wellesley College , Wellesley, Massachusetts.
2
2 Section of Endocrinology, Diabetes, and Nutrition, Boston University School of Medicine , Boston, Massachusetts.

Abstract

BACKGROUND:

Iodine is necessary for the production of thyroid hormones and is acquired through the diet. Cow's milk is a primary source of iodine in the U.S. diet. The objective of this study was to measure the iodine content in a variety of milk alternatives to determine whether milk alternatives contain iodine levels comparable to that of cow's milk.

METHODS:

Iodine levels from 30 different brands of milk alternatives from 16 different companies were measured by the spectrophotometric method of the Sandell-Kolthoff reaction.

RESULTS:

The 30 brands of milk alternatives contained an average of 3.1 ± 2.5 μg/250 mL (∼8 oz. or one cup, serving size) of iodine or 12.3 ± 10.1 μg/L (∼24 oz. or four cups, daily recommended serving for adequate calcium intake) of iodine.

CONCLUSIONS:

These results indicate that milk alternatives contain far less iodine than cow's milk. Individuals with restricted dairy product consumption are at risk for inadequate dietary iodine intake.

PMID:
27358189
DOI:
10.1089/thy.2016.0239
[Indexed for MEDLINE]

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