Urea is the final product of protein metabolism in the human body and is excreted through the kidneys. If a blood test shows that the BUN level is higher than normal, it indicates that the kidneys are not functioning properly, or other underlying disorders.

Raw herring is a delicacy due to its high nutritional content, and dishes featuring raw herring have become increasingly common in the diets of some Vietnamese households. However, there are several reasons why people prefer cooking herring instead of consuming it raw. So, is it advisable to eat raw herring?

Calories are a measure of energy used to calculate the body's needs. However, we often encounter two units: kcal and calorie. This can confuse many people about how to use them correctly. So, what is kcal and what is calorie?