Nick Clegg said he was "not in favour" of lowering the age of consent from 16 to 15 following calls from a leading health expert.
The Deputy Prime Minister told the BBC's Andrew Marr Show, "The age of consent has been in British law for generations in order to protect children.
I think this health expert is right in saying there's a problem - we have far too high levels of teenage pregnancy.
"Do I simply think that a blanket reduction in the age of consent is the answer to this difficult dilemma? No".
More top news
Actress and campaigner tells ITV News the only way to end the trade in illegal ivory is for the West to stand up to Beijing.
The Queen and Prince Harry have responded to a 'game on' from Michelle and Barack Obama in competitive Invictus Games videos on Twitter.
British astronaut Tim Peake takes part in a test to see how a Mars rover handles when it's controlled from further away.