A natural substitute for the morning after pill has been found in olives.
Eating handfuls of olives will not prevent pregnancy, but a chemical found within them can stop a sperm from reaching an egg, the Daily Mail reports.
The natural compound, also found in grapes and mangos, could replace the morning after pill if taken within five hours of unprotected sex.
It could also become the first unisex pill, able to be taken by both men and women without the current side-effects of heart disease, blood clots and depression.
The chemical, lupeol, works by stopping the sperm's "power kick", where its tail is whipped up forcefully to propel it towards and into the egg. Another chemical, primisterin, which is found in the thunder god vine used in Chinese medicine, has the same effect.