Alright, imagine your body is a house that has different rooms where different activities happen. One of these rooms is called the ovaries and it is where female hormones are made, including estrogen.
Now, sometimes there might be too much estrogen being made in the ovaries and that can cause problems like cancer or other diseases. So, doctors have come up with a way to block the production of estrogen in the ovaries.
This method is called an estrogen synthesis inhibitor and it works like a key that locks the door to the room where estrogen is made. Without the key, the room can't be opened and no estrogen can be produced.
In simpler terms, an estrogen synthesis inhibitor is like a superhero that stops too much estrogen from being made in the body.