Progesterone may cause cancer If the hormone is not at its normal level. The normal level depends on the phase of the reproductive cycle. There is a possibility for the patient of getting breast cancer due to progesterone imbalances.
Breast cancer is more frequent in older women. Women that are older than 55 years have the highest risk for getting breast cancer caused by abnormal progesterone levels. Progesterone is the hormone that regulates menstruation and pregnancy. Its role in human breasts is still unknown and under study. Some experiments were made on monkeys. They were given large doses of this progesterone hormone. 1% of the monkeys got breast cancer. So the exact normal level of progesterone level is still a mystery, but doctors are able to recognize abnormal progesterone concentrations, if they are very far from the average. Luckily medical scientists have managed to synthesize progesterone and make drugs from it. Now millions of women are able to cure themselves from any progesterone disorder.




