Within the categories of homogeneous and heterogeneous mixtures there are more specific types of mixtures including solutions, alloys, suspensions, and colloids. Solutions (homogeneous) A solution is a mixture where one of the substances dissolves in the other. The substance that dissolves is called the solute. The substance that does not dissolve is called the solvent. An example of a solution is salt water.
Estrogen-only HRT increases the risk of breast cancer, but only when used for more than 10 years. Estrogen-only HRT also can increase the risk of ovarian cancer.The higher breast cancer risk from using HRT is the same for so-called bioidentical and natural hormones as it is for synthetic hormones. Bioidentical means the hormones in the product are identical to the hormones your body produces.strogen-only HRT increases the risk of breast cancer, but only when used for more than 10 years. Estrogen-only HRT also can increase the risk of ovarian cancer.
The risks of this type of estrogen therapy have been well-publicized. On its own, estrogen causes a slight increase in the risk of strokes, blood clots, and other problems. When combined with the hormone progestin, the risks of breast cancer and heart attack may rise as well.