The Chart (CNN blog)
Ian Kerner
http://thechart.blogs.cnn.com/2012/04/05/birth-control-may-affect-long-term-relationships/

Dr. Craig Roberts of Stirling University questioned more than 2,500 women from around the world for his research. Did their taste in men shift? Or did their birth control have a "love-potion" type of effect?

When a woman uses hormonal birth control containing estrogen, she decreases her levels of available testosterone. And while women have much less testosterone in their systems than men - women's bodies contain about 10% the amount of testosterone men do - what they do have helps fuel sexual desire, fantasy and the ability to become naturally lubricated in response to arousal.

So it makes sense that when a woman's testosterone levels are diminished even further by something like the pill, she might be left feeling blasé about sex: hence her potential attraction to a low-testosterone male.

You have to admit, not being bothered about sex is a highly effective form of birth control, lol.

Now there just needs to be a weight loss aid that involves being blasé about cheeseburgers.