Puberty is the time when children's bodies start to make hormones that lead to physical changes and signs of maturation.

Physical fitness, physical activity and screen time are associated with brain mechanisms underlying mental health and ...

Rare growth disorders are a diverse group of uncommon conditions that affect an individual’s physical development. They may stem from genetic mutations, hormonal imbalances, or other complex factors.

Human growth hormone is important in many aspects of growth and development. For children living with growth hormone deficiency, it can involve more than just physical growth differences. Cognitive ...

EDITOR’S NOTE: Sign up for CNN’s Stress, But Less newsletter. Our six-part mindfulness guide will inform and inspire you to reduce stress while learning how to harness it. Mothers bear much of the ...

Among nonhuman primates, New World marmosets and tamarins (Callitrichidae) exhibit a unique combination of biological and behavioral traits, including monogamy, twinning, and infant caretaking by ...