How much does a baby grow each month after one year old?

After one year old, the growth and development of babies will be slower than before one year old, but compared with babies in other stages, the development is also more obvious. Every month, you will observe changes in your baby's height and weight. Your baby's weight will probably reach about 9000 grams. If it does not meet this standard, it is considered to be on the thin side, so parents should give them more nutritious food.

Infants are children under 1 year old. Babies grow and develop particularly rapidly at this stage, which is the most rapid growth and development stage in a person's life. Their weight is approximately 9,000 to 10,000 grams.

Babies born at full term already have good sucking and swallowing functions, and have thick fat pads on their cheeks that help with sucking activities, but premature babies have poorer abilities. Sucking is a complex natural reflex. Serious illness can affect this reflex, making sucking weak and powerless.

Babies born at full term already have good sucking and swallowing functions, and have thick fat pads on their cheeks that help with sucking activities, but premature babies have poorer abilities. Sucking is a complex natural reflex. Serious illness can affect this reflex, making sucking weak and powerless.

The oral mucosa of newborns and infants is thin and tender, rich in blood vessels, and their salivary glands are not fully developed, resulting in little saliva secretion. The oral mucosa is dry and susceptible to damage and bacterial infection. Saliva secretion begins to increase at 3 months and increases significantly at 5 months. Children under 3 months old have lower levels of amylase in their saliva, so they should not be fed starchy foods. Babies have a shallow mouth and cannot swallow all the saliva they secrete in time, so physiological drooling often occurs.

esophagus

The esophagus has two main functions: one is to propel food and liquids from the mouth to the stomach; the other is to prevent the backflow of stomach contents during swallowing. The esophagus of newborns and infants is funnel-shaped, with weak mucosa, lack of glands, underdeveloped elastic tissue and muscle layer, immature cardiac sphincter in the lower esophagus, poor control ability, and frequent gastroesophageal reactions. Most symptoms disappear at 8 to 10 months of age. Babies often swallow too much air when sucking milk, which can easily lead to regurgitation.

Stomach

The stomach capacity of a newborn is about 30 to 60 ml, which increases with age, to 90 to 150 ml at 1 to 3 months, and 250 to 300 ml at 1 year old. Due to the small stomach capacity of newborns, newborns should be fed in small amounts and multiple times, and the number of feedings should be more than that of older children. The baby's stomach is in a horizontal position, which changes to a vertical position when walking begins.

The gastric smooth muscle is not yet fully developed, making it easy for the stomach to expand when filled with liquid food. Due to the low tension of the cardia muscle, the well-developed pyloric sphincter, and poor autonomic nervous regulation, pyloric spasm and vomiting are easily caused. The gastric mucosa is rich in blood vessels, but has fewer glands and goblet cells. The secretion of hydrochloric acid and various enzymes is less than that of adults, and the enzyme activity is low, resulting in poor digestive function.