Breast Cancer Risk in Postmenopausal Women with Medical History of Thyroid Disorder in the Women's Health Initiative.

CONCLUSIONS: Compared to women with no history of thyroid disorder, hypothyroidism was associated with a lower risk of breast cancer. This was mainly seen among those who received thyroid replacement therapy and had never used menopausal hormone therapy. Among the treatment options for hypothyroidism, levothyroxine had the strongest inverse association with breast cancer risk. PMID: 31918623 [PubMed - as supplied by publisher]
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research