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Subject:
From:
Arly Helm <[log in to unmask]>
Reply To:
Lactation Information and Discussion <[log in to unmask]>
Date:
Wed, 22 Nov 1995 21:09:10 -0700
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Copyright (c) 1995 American Academy of Pediatrics

Pediatrics 1995; 96: 148-150; July, 1995

TITLE: Persistent Hypothyroidism in an Infant Receiving a Soy Formula: Case
Report and Review of the Literature

AUTHOR: PAULA ANN CHORAZY, MD, PHD, SETH HIMELHOCH, MD, NANCY J. HOPWOOD,
MD, Department of Pediatrics, Division of Pediatric Endocrinology,
University of Michigan Medical Center, Ann Arbor, MI; NANCY G. GREGER, MD,
DANIEL C. POSTELLON, MD, Department of Pediatrics, Division of Pediatric
Endocrinology, Children's Hospital of Michigan, Detroit, MI

TEXT: Soy-induced goiter was a well-known phenomenon before 1966, the back
date used in many computerized literature databases. [n1-n4] In the
mid-1960s, iodine-supplemented infant soy formulas prepared from isolated
soy protein were introduced by commercial manufacturers. [n5] Since then,
there have not been any documented cases of soy formula-associated
hypothyroidism.

We present the case of a patient with congenital hypothyroidism who
remained persistently hypothyroid while on a soy formula diet despite large
doses of L-thyroxine (T[4]). This case made us reaware of the historical
data on the effects of soy on thyroid function...[etc.]...
...[etc.]...

Reprint requests to (N.J.H.) Department of Pediatrics, Division of
Endocrinology, University of Michigan, Room D3252, Medical Professional
Building, Ann Arbor, MI 48109-0718.

REFERENCES:

[n1.] Van Wyk JJ, Arnold MB, Wynn J, Pepper F. The effects of soybean
product on thyroid function in humans. Pediatrics. 1959;24:752-760

[n2.] Hydovitz JD. Occurrence of goiter in an infant on a soy diet. N Engl
J Med. 1960;262:351-353

[n3.] Shepard TH, Pyne GE, Kirschvink JF, McLean M. Soybean goiter: report
of three cases. N Engl J Med. 1960;262:1099-1103

[n4.] Ripp JA. Soybean-induced goiter. Am J Dis Child. 1961; 102:106-106

[n5.] Fomon SJ. Nutrition of Normal Infants. St Louis, MO: Mosby; 1993:20-21

[n6.] McCarrison R. The goitrogenic action of soya-bean and ground-nut.
Indian J Med Res. 1933;21:179-181

[n7.] Sharpless GR. A new goiter producing diet for the rat. Proc Soc Exp
Biol Med. 1938;38:166

[n8.] Wilgus HS Jr, Gassner FX, Patton AR, Gustavson RG. Goitrogenicity of
soybeans. J Nutr. 1941;22:43-52

[n9.] Halverson AW, Zepplin M, Hart EB. Relation of iodine to the
goitrogenic properties of soybeans. J Nutr. 1949;38:115-129

[n10.] Sharpless GR, Pearsons J, Prato GS. Production of goiter in rats
with raw and with treated soybean flour. J Nutr. 1939;17:545-555

[n11.] Block RJR, Mandl H, Howard HW, Bauer CD, Anderson DW. The curative
action of iodine on soybean goiter and the changes in the distribution of
iodo-amino acids in the serum and in thyroid gland digests. Arch Biochem
Biophys. 1961;93:15-24

[n12.] Van Middlesworth L. Thyroxine excretion, a possible cause for
goiter. Endocrinology. 1957;61:570-573

[n13.] Van Middlesworth L. Re-evaluation of certain aspects of iodine
metabolism. Recent Prog Horm Res. 1957;16:405-438

[n14.] Beck RN. Soy flour and fecal thyroxine loss in rats. Endocrinology.
1958;62:587-592

[n15.] Konijin AM, Gershon B, Guggenjeim K. Further purification and mode
of action a goitrogenic material from soybean flour. J Nutr.
1973;103:378-383

[n16.] Rawson RW, Rall JE. Endocrinology of neoplastic disease. Recent Prog
Horm Res. 1955;11:257-290

[n17.] Pinchera A, MacGillivray MH, Crawford JD, Freeman AG. Thyroid
refractoriness in an athyreotic cretin fed soybean formula. N Engl J Med.
1965;273:83-87

[n18.] Franzese A, Limauro R, Ecuba P, Campanile F, De Martino F, Tenore A.
L-T[4] malabsorption determined by intolerance to cow's milk proteins and
celiac disease in a patient with hypothyroidism: a clinical case. Minerva
Pediatr. 1993;5:113-116

[n19.] Motil KJ. Protein needs for term and preterm infants. In: Tsang RC,
Nichols BL, eds. Nutrition During Infancy. Philadelphia: Hanley and Blefus;
1988:100-121

[n20.] Endocrine Diagnostic Syllabus. Calabasas Hills, CA: Endocrine
Sciences; 1992


[log in to unmask] (Arly Helm, MS, CLE, IBCLC)

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