Certified Nutrition Specialist (CNS) Practice Exam 2026 – All-in-One Guide to Master Your CNS Certification!

The reason eggs are typically considered a low-purine food choice, making them safe after a kidney stone, is that they contain minimal purines compared to other protein sources. Purines are naturally occurring substances found in many foods, and when metabolized, they produce uric acid. High levels of uric acid can contribute to the formation of certain types of kidney stones, particularly uric acid stones.

In contrast, fish, red meat, and shellfish contain higher levels of purines. These foods, while nutritious, may increase uric acid levels in the body, thereby posing a risk for those who have experienced kidney stones or have a predisposition to such conditions. Thus, including eggs as a source of protein after a kidney stone is advisable, as they provide essential nutrients without contributing significantly to purine intake.