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.
This is because declining estrogen and progesterone levels do not just affect a woman's reproductive capabilities; they also cause bone density to decrease and the risk of fractures to increase. By taking estrogen either as ERT or as HRT, bone loss can be slowed and bone density can even be regained.