I was listening to the radio the other day on a programme about this as they said (like the article) that the brain is like any other organ like the liver and k

I was listening to the radio the other day on a programme about this as they said (like the article) that the brain is like any other organ like the liver and kidneys and that all observed structural changes was due to nurture and culture. However they said that there was one rarely studied difference in the chemical (or hormonal?) soup that gets given / produced as a baby and that these different chemicals haven't been examined enough when it comes to the difference in brains between men and women. Can anyone expand on my limited and hazy understanding of what I might have heard? edits - I can't find the programme, it might have been during a morning news show on radio 4.