Can anyone tell me whether there is any truth to the christian claim that 6 million muslims leave islam and convert to christianity every year. I personally think that it's not true because the number seems ridiculously high, and if it were true why are the African muslims so quiet about it. I know that christians hate hearing "Islam is the fastest growing religion in the west and in the world", so my suspicions are that they have made these claims up in order to counter the muslim claim and make christians feel better about their dying religion.. The muslim claim that islam is the fastest growing religion in the world is backed by non-muslims. But of course, there is a chance the christian claim (6 million muslims converting to christianity per year) might be true, so can any brother or sister enlighten me as to what the truth is.