Alright, I did a search for this, including searching CNN's website, and found no such article or statement ANYWHERE.
So, I am highly dubious of its accuracy.
It is true that using any type or hormonal birth control can be dangerous to those more likely to develop blood clots, because risk of heart attack will then be increased, but that's with any form of hormonal birth control.
Another reason I am also dubious of this is because as of yet, there aren't many studies yet documenting the benefits/risks of Nuvaring compared to other hormonal birth control, and most of the information regarding increased risk of heart attack/etc. is based on studies done with birth control pills, not the ring itself.
So while it is good to take into consideration ANY hormonal birth control can increase your risk of blood clots/stroke/heart attacks, especially if you smoke/are over 35/etc. Nuvaring itself is not more culprit than any other form of hormonal contraception.
So, unless you or your boyfriend can actually come up with proof of the CNN story he saw on this, and furthermore that story has valid facts, I'd say this probably isn't accurate information and Nuvaring will not give you any greater risk for heart attack than any other form of hormonal contraception.
(In case you're interested, I grabbed this from the Planned Parenthood website information on Nuvaring
NuvaRing® contains the progestin Etonogestrel (a form of the progestin desogestrel which is contained in some kinds of birth control pills).
Because NuvaRing® is a new method of birth control we must take information gotten from studies of the Pill and apply it to the Ring. Some of those studies have shown that there is a small increase in the risk of getting blood clots in the veins of the legs or lungs of women using birth control pills containing desogestrel compared to birth control pills containing other types of progestins. No one knows for sure if this increased risk of getting blood clots is the same for women who use NuvaRing® but it is important that you know about the possibility.
What are your chances of developing a blood clot compared to other women?
The chance of getting these blood clots if you are not using any hormonal birth control and are not pregnant is 4 per 100,000 women per year.
If you are taking birth control pills containing other progestin hormones (levonorgestrel or norethindrone), the chance of getting these blood clots is 10-15 in 100,000 women per year.
For a woman currently using a pill containing desogestrel, the chance of getting these blood clots would be 20-30 in 100,000 women per year. (This may be the same for the Ring.)
On the other hand, for any woman who becomes pregnant, the chance of getting these blood clots is about 60 per 100,000 women per year.
[This message has been edited by dailicious (edited 08-23-2005).]