Hormonal methods of contraception
The ability to reproduce. is naturally controlled by Chemical messenger produced in glands and carried by the blood to specific organs in the body.. Scientists understand the role of hormones in the menstrual cycle and fertility so well, that they have been able to develop medication to artificially control fertility, using hormonal forms of contraception.
Oral contraceptives
The oral contraceptive, which is known as the pill, contains A female sex hormone produced in the ovaries, which is responsible for puberty in girls and the regulation of the menstrual cycle. or Sex hormone produced by the ovaries and placenta.. These hormones inhibit the production of Follicle Stimulating Hormone. It stimulates oestrogen production and the growth of follicles (egg-sacs) in the ovary. It is secreted by the pituitary gland., so eggs cannot mature and ovulation does not take place.
Benefits and risks
Oral contraceptives are more than 99% effective if taken correctly and can reduce the risk of certain cancers.
However, there are possible side effects, such as changes in weight, mood and blood pressure, due to high levels of oestrogen. The pills also do not protect against sexually transmitted A disease that is caused by a pathogen and so is transmitted rather than inherited or caused by an environmental factor.. Modern pills contain much less oestrogen.
Contraceptive injections, implants or skin patches contain slow-release progesterone to inhibit the maturation and release of eggs.