obesity: Body Mass Index for adultsEncyclopÃ¦dia Britannica, Inc.Obesity was traditionally defined as an increase in body weight that was greater than 20 percent of an individualâs ideal body weightâthe weight associated with the lowest risk of death, as determined by certain factors, such as age, height, and gender.
Define infancy: early childhood; a beginning or early period of existence; the legal status of an infant â infancy in a sentence early childhood; a beginning or early period of existence; the legal status of an infantâ¦ See the full definition
Infancy: Sensation, Perception and Learning. THE NEWBORN Babies can see, hear, and respond to interesting sights, sounds, and other sensory stimuli at a much earlier age than was originally believed.A New Baby's Reflexes The newborn, or neonate, has a repertoire of reflexes, or involuntary responses to external stimuli.