When it comes to buying peanut butter, most of us are looking for one thing on the label — creamy or crunchy. However, there is something else you should be checking for: palm oil.

Palm oil prevents the natural separation process that causes oil to rise to the top of your peanut butter jar. It’s a problem that can be fixed by stirring the peanut butter.

A tablespoon of palm oil contains about a third of the daily recommended value of saturated fats. Consuming high quantities of saturated fats can lead to heart health issues.

Palm oil production has also led to deforestation, high carbon and greenhouse gas emissions from production, and catastrophic increases in fires across countries.