The latest research by child health experts shows that there are critical stages of child development and high incidence of certain diseases, so understanding these rules and grasping the best age can help raise healthy and smart babies. Feeding the best age: many children suffer from varying degrees of “anorexia”, parents are distressed by this, one of the reasons is to ignore the feeding of the critical feeding period. It is 5-7 months after birth, during this time if you can reasonably add fruits, vegetables, egg yolk, rice porridge and other complementary foods, to give the development of their appetite to benign stimulation, you can develop good eating habits. The best age to prevent myopia: research shows that the years between 10 and 13 years old is the peak period to prevent the formation of myopia, it is appropriate to start from the following aspects of prevention: First, supplemental nutrition, in addition to protein, vitamins, calcium, t and other elements have been proven to be essential for the development of the eye, milk, soybean products, animal liver, beef and other essential food for children; second, limit sugar, sugar is acidic food, can consume the body’s The third is to get enough sleep to maintain the balance of sympathetic and parasympathetic functions; the fourth is to exercise more, such as flying kites, playing shuttlecock, playing table tennis and other sports activities to promote the blood supply and metabolism of the eye tissue. The best age for healthy teeth: dental development depends on two stages; one is from 2 months of fetal life to birth, which is the period of development of milk teeth, and the second is from birth to 8 years old, which is the period of permanent teeth formation. During these two stages, it is advisable to arrange more soy products, dairy products, fish and shrimp, and vegetables of various colors to ensure strong and solid teeth and less gum disease. In addition, more sunshine, diligent brushing and rinsing, correcting “finger eating”, “lip biting”, “tongue licking” and other bad habits, is also the key to beautiful teeth. The best age to prevent stuttering: stuttering mostly occurs between the ages of 2 and 5, so 2-5 years old is the best age to prevent the disease. It is important to focus on language training for young children in order to master more vocabulary and enhance the ability to express; parents should also pay attention to language expression and give their children the right example of learning. The optimal age for language development: There are two types of language: oral and written. The critical period for the development of oral language in children is 2-3 years old, while 4-5 years old enters the decisive stage of written language development. Children generally begin to learn language from 8-9 months of age and can master 900-1000 words at the age of 1, developing rapidly. This period should be diligent with its dialogue, teach its literacy, in order to enhance its recitation ability, dialogue ability, ready for school. The best age to correct strabismus: Healthy children are examined at 2-3 years old to detect amblyopia and strabismus early so that they can be corrected early. The mystery is that the critical age for pediatric vision development is 1-3 years old. Many eye diseases that are operated on beyond the age of 2 will leave varying degrees of visual impairment. Optimal age of thinking development: Thinking ability is one of the core intelligence of human beings, and there are two developmental peaks in childhood: one is in the fourth grade and the other is in the second grade of middle school. Seize these two stages and try to make your child more observant, ask more questions and think more, which will make them smarter. The best age for moral development: the fourth grade and the second grade of junior high school are also the best age for moral development. Parents and teachers should not only give good education, but especially set an example. The best age for calcium supplementation: Calcium is an essential element for human health and should be taken throughout the life except for infancy and childhood, especially during the three years between 12 and 14 years old. In short, as parents should understand several important “time windows” of children’s development, timely detection of problems, pay more attention, often with half the effort, to raise a healthy and intelligent next generation.