Women’s cholesterol levels vary with phase of menstrual cycle

National Institutes of Health researchers have shown that women’s cholesterol levels correspond with monthly changes in estrogen levels. This natural variation, they suggest, might indicate a need to take into account the phases of a woman’s monthly cycle before evaluating her cholesterol measures. On average, the total cholesterol level of the women in the study varied 19 percent over the course of the menstrual cycle.

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