[POWERSBOOTHEFAN]

My sister,who is 17,takes them because her periods wee very painful,so they can be beneficial.

I might take them for the same reason,as my periods are heavy and are affecting my iron levels.

[POWERSBOOTHEFAN]

That’s ‘were’,not ‘wee’.

[rwilson99]

While those uses could be considered ethical even by the Catholic Standard of double effect. You might want to investigate the concept of naprotechnology and health care providers that might be able to provide treatment options that could be far less toxic than the pill.

The website is easy to find http://naprotechnology.com/

[Antoninus]

My sister,who is 17,takes them because her periods wee very painful,so they can be beneficial.

The pill is a class-1 carcinogen. One should always do a cost-benefit analysis before beginning any course of medical treatment. Are less painful periods worth the increased risk of breast cancer in your 50s?

[fight_truth_decay]

"compared to birth control pills, "pregnancy is a bigger risk for blood clots."

An FDA study released found that among women who use the older pills there are about six cases of blood clots per 10,000 women each year. As for the newer pills, the FDA came to basically the same conclusion as the Israeli study: Annually there are about 10 blood clots per 10,000 women taking the drospirenone pills."

"....a new study of 330,000 Israeli women found those using the pills with drospirenone have a 43-65% higher chance of having a blood clot than women who use other types of birth control pills. These clots usually form in the legs, but can travel up to the lungs and cause a pulmonary embolism. Though that sound scary, it's actually extremely unlikely that you'll drop dead from taking birth control pills. Out of every 10,000 women taking pills like Yaz or Yasmin [in study], only eight to 10 experience a blood clot each year."

"However, the findings could be important for women who already have other risk factors for blood clots, like obesity or high blood pressure (as you've probably picked up from the babbling during drug commercials, women who are over 35 and smoke are already advised to avoid birth control pills). Of course, we should also remember that women take the pills to avoid an even riskier medical situation.."

[Source Nov. 2011 ]via CMAJ, November 7, 2011

[Caipirabob]

because her periods wee very painful...

Quite seriously, I would recommend an MRI to check for cysts, as these can potentially cause both painful and longer periods. I'm not referring to a cancerous cyst, just normal cysts that many women have, but in some cases such that they can create tremendous discomfort and contribute to heavier periods. Cysts are a likely cause in many cases of irregular menses.