Hi Dick:  I've done a lot of reading on Forteo and I don't remember reading about af and Forteo.  Below is the FDA pdf on Forteo with all the side effects listed.  The only cv effects they mention is hypertension, angina and syncope.  I finished my 2 years on Forteo and didn't have any heart probs with it.  I do have some heart probs like hypertension and SVT, but I've had hypertension since my 20's and I'm now 54.  I recently developed SVT's but I don't think that has anything to do with Forteo, plus I've been off of it since the beginning of June.    BTW, I did really well on Forteo and went from low bmd (-3.6) to normal in the spine.  My hips are now osteopenic.   Good Luck...   http://www.fda.gov/cder/foi/label/2002/21318_forteo_lbl.pdf