If you love avocados, a new report is making a very surprisingly claim at the popular fruit, and that’s that they’re becoming more and more dangerous every year. No, not in terms of eating them, but when it comes to preparing them, as researchers are finding that there are a growing number of patients in the emergency room due to “avocado hand” as they sliced up their hands from cutting an avocado.

The problem is that avocados are sometimes so ripe that people don’t realize they need to be handled with more care, and because many people cut an avocado while cupping their hand, they sometimes accidentally slice their own hands by not realizing that not much force is necessary to cut into a ripe avocado, according to a Times of London report.

And they’re not always small injuries, either. Knife injuries to nerves or tendons in the hands can often take weeks or even months to heal. The best thing to do is to cut an avocado on a cutting board like any other fruit, and to always keep your fingers out of the way of the direction of the knife.

“Surgeons say growing numbers of amateur chefs are reporting to accident and emergency departments with what they are calling “avocado hand”; serious stab and slash injuries that are the result of failed attempts to penetrate the fruit’s hard outer casing with a sharp knife before encountering a resistant inner stone,” the Times of London report states. “The British Association of Plastic, Reconstructive and Aesthetic Surgeons is calling for safety labels on the fruit to staunch the flow of injured patients to hospitals.”