What is the standard height and weight for a 7-year-old boy?

Many parents said that after taking their children out, they found that their children were either much shorter or less physically strong than children of the same age. Other children were white and plump, while their own children were very thin. This means that children must strengthen their nutritional supplements, so the question is, what is the standard height and weight for a 7-year-old boy?

Height and weight standard for 7-year-old baby

1. Male height = height at birth (cm) ÷ 0.2949; Female height = height at birth (cm) ÷ 0.3109. Please note when using this formula: it is only applicable to normal full-term newborns; if the height data can be measured accurately to 0.1 cm, the height prediction will be more accurate.

2. Male height = height at 3 years old × 0.545 + average height of parents × 0.544 + 37.69 (cm); Female height = height at 3 years old × 0.545 + average height of parents × 0.544 + 25.63 (cm), standard height prediction formula (genetic law)

Factors that affect your baby's height

1. Nutrition

Stature is the sum of the head, spine and lower limbs. It is an important indicator of bone growth, especially long bone growth. When the baby's nutrition cannot meet the needs of bone growth, the rate of height growth will slow down. Nutrients closely related to bone growth include vitamin D, calcium and phosphorus. Insufficient iodine and zinc can also cause babies to be short.

2. Sleep

Growth hormone secreted by the pituitary gland is an important hormone that stimulates the baby's growth. The secretion of human growth hormone is unbalanced within 24 hours a day, and its secretion is higher during sleep than when awake. Lack of sleep will affect the baby's growth. Generally, newborns require 20 hours of sleep per day and night. From 2 to 6 months, it is 15 to 18 hours; from 6 to 18 months, it is 13 to 15 hours; from 18 months to 3 years old, it is 12 to 13 hours; from 3 to 7 years old, it is 11 to 12 hours. The amount of sleep a baby needs each day varies greatly from person to person. If some babies sleep less but their spirit, mood, and growth and development are normal, there is no need to force it.

3. Exercise

Exercise can promote blood circulation, improve bone nutrition, accelerate bone growth, make bones dense, and promote height growth. Babies under 3-4 months old should lie on their stomachs several times a day to promote whole-body activities, and should develop basic abilities such as turning over, crawling, standing, and walking as they grow older. Babies should not be held or sit for too long. It is not convenient for babies to move their whole body while being held, and sitting for a long time will affect the development of their lower limbs. At the same time, after babies learn to sit, they are often unwilling to learn to roll over and crawl.

4. Disease

Many diseases can affect the baby's height growth. Generally, acute diseases only affect weight, while chronic diseases can affect height. If, after long-term measurement and observation, the baby's height is always more than 10% lower than the average height of children of the same age, it is called growth retardation; if it is more than 30% lower, it is abnormal and should be diagnosed and treated in time.