Using the oil can also result in serious side effects, like nausea, vomiting, muscle cramps, diarrhea, and irregular heartbeat. For people who are pregnant, castor oil can also cause early cramps. A ...

Here’s what castor oil can — and can’t — do. Todd Heisler/The New York Times Eye health No high-quality evidence suggests that castor oil can improve eye health, especially not in terms of ...