in iran, it's more than 20%. >> unfortunately, infertility is veryigh h in iran.here are several reasonons fr this, environmental pollututio, lifestyle, poor r nutrition.n. and of course e there has s bea increase in ththe number of f pe marryingng later and deciding o have children later in life and correspondent: of all the couples we spoke to, not one had told their families about their attempt to concieve through ivf , either with the husband's sperm or with donanated sperm fm a sperm bank. >> many couples hide the fact they've undergone ivf even after they've done it. including couples who have used their own sperm. 90% of patients are inseminated with their own sperm. even then, they keep it secret and pretend the pregnancy happened naturally. we actually advise them to do that, because if the registry office learns that the child was conceived through insemination, it can be problematic. then the couple has to prove the child is really theirs. correspondent: although iran is highly-advanced when it comes to research into ivf, the topic is still taboo. and t