The number of births per woman of child-bearing age has fallen from 7 in 1980 to 1.8 in 2014 - below Britain's fertility rate, for example, of 1.9.
Anything that brings young adults together in a controlled way, in line with Islamic principles, is welcome, especially as the regime has an official target to double Iran’s population to 150 million by 2050.
Mohammad Kamand is preparing a young man for marriage at Tebyan, a government-approved website where arranged unions are strongly favoured over love matches. Profile pictures are forbidden and parents must accompany would-be couples on their first dates.
The aim of this website is to use Islamic principles to get single young people together.
Sex outside wedlock is illegal in Iran, but many young people are shunning the idea of getting married.
As a result, the regime is worried about a steady fall in Iran’s fertility rate, which has now settled at Western levels.
Dating websites like Tinder are banned in Iran, but about 350 unofficial dating websites are believed to exist. It relies on traditional matchmakers like Malakeh Mogadam, who has converted her home into a lonely hearts call centre.