Dr Mobin Akhtar is on a mission to educate Pakistanis in sexual matters, but his latest attempt to do so has caused controversy.
The release of his book - Sex Education for Muslims - aims to teach people about sex in a way that is in keeping with Islamic instruction.
Dr Akhtar, 81, says the fact that sex is not discussed in Pakistan is having serious repercussions. As a psychiatrist, he says he has witnessed them himself, and that is why he felt the need to write his book.
"There's a huge problem in our country," he says.
"Adolescents, especially boys, when they get to puberty, and the changes that come with puberty, they think it's due to some disease.
"They start masturbating, and they are told that is very dangerous to health, and that this is sinful, very sinful."
Dr Akhtar says he has seen cases where teenagers, not understanding what is happening
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