A–Z Glossary

Poor weight gain

A growth pattern in which a child's weight or overall growth is not following the expected trajectory over time.

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Baby refuses solid food what to do

Baby refuses solid food what to do

Why a baby may refuse solid food Refusal does not automatically mean that something is wrong. Solids are a developmental transition from a familiar, liquid feeding pattern to a complex sensory and motor task. A baby must coordinate posture, lip closure, tongue movement, chewing or mashing, and swallowing while also processing unfamiliar tastes and textures. […]

Loss of appetite baby causes

Loss of appetite baby causes

Understanding Appetite Changes In Babies Loss of appetite in a baby rarely has a single obvious meaning. A newborn, a six-month-old starting solids, and a nearly one-year-old exploring the room all express hunger and fullness differently. A useful first step is to ask whether the baby is truly taking much less overall, or whether the […]

When growth is a concern

When growth is a concern

Growth is a pattern, not a single number Clinicians assess growth by plotting serial measurements of weight, recumbent length, and head circumference on standardized charts. For infants and young children, weight-for-age, length-for-age, and weight-for-length each answer different questions. A baby may be constitutionally small but proportionate, while another may have an appropriate length but a […]

Is my baby too small for age

Is my baby too small for age

What does too small for age mean? There is no single measurement that defines whether a baby is too small. Clinicians compare a baby’s weight, length, and head circumference with standardized reference data for babies of the same sex and age. The result is commonly expressed as a percentile or a z-score. A percentile describes […]

How growth spurts affect weight

How growth spurts affect weight

What happens to weight during a growth spurt? During a growth spurt, the body increases its production of new tissue. In a baby, this may include muscle, bone, fat stores, organs, and blood volume. These processes require energy and nutrients, so some infants show a temporary increase in appetite or feeding frequency. A baby may […]

Why growth rate changes over time

Why growth rate changes over time

Growth is naturally phased, not constant Growth rate means how quickly a measurable characteristic changes during a defined interval. In babies, clinicians may assess weight gain in grams per day over a short period, or evaluate changes in weight, recumbent length, and head circumference across weeks or months. The rate is therefore different from the […]

Why baby is not gaining weight

Why baby is not gaining weight

What slow weight gain means Babies do not gain weight in a perfectly linear pattern. Short periods of slower gain can occur during minor illness, developmental transitions, or changes in feeding. The clinically relevant question is whether the baby is following an individual growth trajectory and maintaining proportional growth over time. Clinicians commonly assess weight-for-age, […]

When to worry about growth

When to worry about growth

Growth is a pattern, not a single number Infant growth is assessed using serial measurements of weight, recumbent length, and head circumference. These data are plotted on an age- and sex-specific growth chart, allowing the clinician to examine both the current percentile and the trajectory over time. The percentile is a comparison with a reference […]

Catch-Up Growth After Premature Birth

Catch-Up Growth After Premature Birth

What catch-up growth means Catch-up growth is an acceleration in growth after a period of restricted or slower-than-expected growth. In a premature infant, the reference point is not simply the child’s chronological age. Clinicians consider how many weeks early the baby was born and compare current measurements with appropriate growth standards. Catch-up may be visible […]

Growth During the Transition to Solid Foods

Growth During the Transition to Solid Foods

Why the Transition Matters for Growth Complementary feeding begins when breast milk or infant formula alone no longer fully meets an infant’s evolving nutritional requirements, while milk remains an important part of the diet. The World Health Organization identifies the period from 6 to 24 months as especially important because children undergo rapid growth and […]

How often to check baby weight

How often to check baby weight

Routine weight checks for healthy babies In the early newborn period, weight is checked more closely because newborns normally lose some weight after birth and then begin to regain it. A clinician may recommend a review within the first days after discharge and a further assessment during the first couple of weeks, depending on local […]

Growth concerns parents often have

Growth concerns parents often have

Why growth measurements cause so much concern Parents often become concerned when a baby appears smaller or larger than peers, outgrows clothing unusually quickly, gains weight more slowly than expected, or receives a measurement that seems different from the previous visit. These observations are understandable because growth is concrete and easy to compare. However, comparison […]

Slow weight gain baby explained

Slow weight gain baby explained

What slow weight gain means in practice Slow weight gain does not have a single universal definition. In practice, clinicians look for a baby whose weight gain is slower than expected for age, whose growth curve is flattening, or whose weight is crossing growth percentiles downward over time. The key idea is trajectory: a baby […]