PEDIATRICS Vol. 65 No. 4 April 1980, pp. 703-705
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Lack of Protective Effect of Breast-feeding in Congenital Hypothyroidism: Report of 12 Cases

Jacques Letarte MD1, Harvey Guyda MD1, Jean H. Dussault MD1, and Jacqueline Glorieux LPs1

1 Départment de pédiatrie, Université de Montréal, the Department of Pediatrics, McGill University, Montreal, and the Centre hospitalier de l'Université Laval, Québec

Hypothyroid babies being breast-fed (12 cases) or bottle-fed (33 cases) have been compared. Anthropometric measurements at referral as well as biochemical values including plasma T4, T3, and thyroid-stimulating hormone were not significantly different. Bone maturation expressed as number of ossification centers or their surface were identical. Babies from both groups had similar psychologic performance at their first anniversary. It is concluded that breast-feeding does not protect against the deleterious effects of congenital hypothyroidism.

Submitted on May 21, 1979
Accepted on July 30, 1979