In the same pediatrician’s office, two little boys happen to have their 3-year-old well visit on the same day.

Like many new parents, you might be wondering if your baby is growing at a healthy rate. Questions like, "What is the average newborn weight?" or "How much should a 1-year-old weigh?" are common ...

Twins tend to be born smaller than singletons because the shared uterine environment limits space and nutrients, leading to ...