Changes in fat and fiber intake have been found to alter a woman's hormonal profile.
A low-fat/high-fiber diet lowers levels of both estrogen and progesterone compared to a high-fat/low-fiber diet. To little saturated fat has a similar effect on hormone levels. The effect isn't enormous with estrogen being reduced by 7% or more depending on how low fat intake is taken but it does exist. This is certainly beneficial from a health standpoint, in terms of reducing the risk of breast cancer, but it could contribute to the risk of menstrual cycle dysfunction as es