Tory backbencher Jacob Rees-Mogg reiterated his strict anti-abortion stance in a heated exchange with BBC's Emma Barnett.
Barnett pointed out Health Secretary Jeremy Hunt has said he would favour cutting the abortion limit from 24 weeks to 12 and said changes to the limit could be changed by a bill if Cabinet ministers supported a reduction.
Rees Mogg responded:" I would be in favour of the numbers of weeks being reduced, of course I would.
"By as many weeks as possible."
The MP, who some say could be a future Prime Minister, also called abortions after rape a "second wrong".
The 1967 Abortion Act came into effect 50 years ago on Friday and the anniversary has sparked a debate over whether the law should be relaxed or tightened.
Rees Mogg made his position on abortion clear during the 5 Live interview and added: "It is important to look at the number of weeks because to abort babies beyond the number of weeks at which they could live outside the womb seems to me extremely difficult to defend.
"I'm against abortion. Full stop. I would support reducing the number of weeks... Life either begins at the point of concept or moment of birth to fix a number of weeks is essentially arbitrary.
"But I would support a reduction."
The Brexiteer is one of many MPs that have been grilled about their religious views recently.
Rees-Mogg appeared on ITV's Good Morning Britain last month about if he opposed gay marriage, if gay sex was sinful and on his views on abortion.
The Catholic MP had previously been linked to an Indonesian firm which manufacturer a pill which causes terminations.
He later dumped stock he held in a different pharmaceutical firm in India, which also sells abortion drugs.