about (lea)contraceptive?

Question

please answer this following questions,
thank you
　
- is it physically invasive?
　
- effectiveness of the method against S.T.D.'s and unwanted pregnancies
　
- advantages / disadvantages of this method as compared to other methods of birth control
　
- target market for this method (is this method user by teenagers?)

Answer 1

The Lea Contraceptive is sort of similar to a diaphragm. It is this cup-shaped, maliable silicon bowl thing that is inserted before intercourse and then removed 8-48 hours after and washed. You use a spermicide with it, just like with a diaphragm. There is a loop on the bowl that helps you put it in and take it out. One size fits all, and you can get one without a prescription. That is, it doesn't have to be fitted by a doctor, like the diaphragm and cervical cap.

It is NOT effective at preventing STDs.

It is about effective as a diaphragm at preventing pregnancy, but maybe not quite as effective:

Diaphragms have a failure rate of 6% in the first year with PERFECT use. (That is, theoretically, only 6% of women will get pregnant within a year, if using this method perfectly)

However, Diaphragms have an actual failure rate of 16% in the first year with TYPICAL use. (That is, in real life, about 16% of women get pregnant in the first year, when choosing and using this method).

These numbers are per "Managing Contraception", pocket reference for physicians.

Other studies (such as the website below), quote other numbers.

As far as advantages and disadvantages, there are too many to compare to answer this well. However, check out this website, and you can see these differences:
http://en.wikipedia.org/wiki/Comparison_of_birth_control_methods

Here is also some more specific info on Lea Contraception:
http://en.wikipedia.org/wiki/Lea%27s_shield

And no, teenagers don't typically use this method:
1) Most of them don't know it exists.
2) Health agencies don't promote it because it doesn't prevent transmission of STDs.
3) Usage is more complicated and make sex less "spontaneous" than other methods

Most teenagers either abstain, use no method, use latex condoms, or use birth control pills....

Check the above websites for more info, and use the links at the bottom of the articles to read even more...

Hope this helps!