What is the definition of low birth weight?

Low birth weight refers to infants who are born weighing less than 5.5 pounds (2,500 grams). This classification is significant because low birth weight can lead to various health complications and developmental issues for infants, including increased risk of chronic health conditions later in life.

The weight threshold is rooted in research that demonstrates these infants often require special medical attention and may face challenges such as respiratory issues, feeding difficulties, and long-term growth issues. Hence, focusing on the definition that encompasses both pounds and grams provides clarity and consistency in medical terminology, making options that do not meet this standard insufficient.