Zygote is the diploid cell that results from the fertilization between an egg and a sperm. Etymology. Came from the Greek word âgametesâ meaning âhusbandâ and âgameteâ meaning âwife.â. Came from the Greek word âzygotosâ meaning âjoined or yoked or to yoke.
This is not causation, but facilitation after the fact. Stating that estrogen causes breast cancer is like saying fertilizer causes weeds. In a garden even weeds need some soil nutrients, and if these are completely removed, the weeds can't grow...but neither can the desired plants.
Estrogen boosts the activity of serotonin. Women who experience a long duration of menopause or postmenopausal women who have not used ERT have a prolonged deficiency in estrogen. This prolonged estrogen deficiency may be associated with impairment in estradiol receptors in the brain.