Hormone replacement therapy may reduce high serum homocysteine in postmenopausal women

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Abstract
In a prospective study we investigated the possible changes in fasting serum total homocysteine concentrations during continuous micronized 17 beta-oestradiol, 2 mg daily, in combination with cyclic dydrogesterone, 10 mg daily during the first 14 days of each 28 day cycle, in 21 healthy non-hysterectomized postmenopausal women. During the first six cycles mean serum homocysteine decreased by 10.9% (P = 0.013), after which no further significant changes were found during the 2 years of treatment. A 16.9% decrease (P = 0.017; n = 8) was found in women with high homocysteine concentrations, while in women with low homocysteine concentrations (n = 13) no significant changes were observed. The observed decrease in high homocysteine concentrations in postmenopausal women may in part contribute to the decreased risk of developing cardiovascular disease during hormone replacement therapy.