FootballFirst
Well-Known Member
http://www.aafp.org/afp/1998/1201/p2077.htmlFirst of all there's no localized inflammation. Secondly, the immune system doesn't attack sperm. A woman's body naturally attacks sperm as a foreign substance. In some women, it's so bad they can't have sex.There are two types of IUD, copper and progesterone. Copper immobilizes sperm so it can't implant an egg. Progesterone causes the body to release leukocytes and prostaglandins which are harmful to sperm and developing eggs.
Many theories have been proposed to explain the contraceptive action of IUDs.12,13 One of the earliest theories was based on studies showing that the presence of a foreign body in the uterine cavity interfered with reproduction in all species tested.9 This result was attributed to a biochemical, noninfectious, inflammatory foreign body reaction that induced prostaglandin release. This release resulted in altered uterine activity and tubal motility, as well as having a direct effect on spermatozoa.9,14
Other proposed mechanisms of action include the migration of white blood cells into the uterine cavity, resulting in the phagocytosis of spermatozoa; the release of an endotoxin during white blood cell breakdown, causing destruction of spermatozoa; and the presence of copper ions (in the case of copper-bearing IUDs), which seem to have a direct toxic effect on spermatozoa.12,13
It is probably a combination of all these factors that makes the IUD such an effective contraceptive. IUDs containing progesterone produce similar effects and, in addition, thicken cervical mucus and suppress ovulation in some women because of systemic absorption of the hormone.9
This means hormone IUDs are abortion devices.
It is important for the patient to understand that the IUD does not appear to be an abortifacient but, rather, prevents conception. This position is supported by studies that have sought the presence of human chorionic gonadotropin in IUD users and compared tubal flushings of IUD users with those of noncontraceptive control subjects.15,16 These reports are further supported by other research demonstrating that IUDs have a toxic effect on sperm and that women who use IUDs have fewer ectopic pregnancies than noncontraceptive-using control subjects
what is more natural than you own body destroying a foreign invader?None of these things are natural and can cause serious harm.