What happens when you eat the green part of rhubarb?

Eating the green part of rhubarb can be harmful, as it contains high levels of oxalic acid and anthraquinone glycosides, which are toxic. Consuming these parts can lead to symptoms such as nausea, vomiting, and in severe cases, difficulty breathing or kidney damage. It's safest to eat only the red stalks of rhubarb, which are safe and commonly used in cooking and baking. If you suspect you've ingested a significant amount of the green parts, it's advisable to seek medical attention.