What is the leading cause of low birth weight in developed countries?

Question

Quizplus · Accepted Answer

Smoking is the leading cause of low birth weight in developed countries. It reduces fetal growth, increases the risk of preterm birth, and damages the placenta's ability to transport oxygen and nutrients to the developing fetus. Cocaine use and drinking alcohol can also contribute to low birth weight, but they are not as common as smoking. Mega-dosing of vitamins is not a known cause of low birth weight.

What Is the Leading Cause of Low Birth Weight in Developed