All or most estrogen comes from testosterone, in the process of aromatase, which Lotus always stresses.

About prolactin and progesterone, they both lower LH. LH raises estrogen, and LH lowers prolactin and progesterone. I made the mistake of oversimplifying. Prolactin and progesterone may not lower estrogen (at least not directly). Lotus was correct when saying that estrogens are released by the egg. Definitely progesterone is released by the corpus luteum, and by a fertile egg, and estrogen is produced by the egg.

Too much PUFAs I heard raises cancer risk. A combination of healthy fats, including a small amount of PUFAs and lots of monosaturated and monounsaturated fats, is good.