Why is the IQ so low

People's IQs are different. Some people are born with high IQs. I believe that many people hope that they can be very smart and have very high IQs. They don't want to see low IQs. Low IQs can cause mental abnormalities in the human body, such as mental defects and developmental delays. Such people are called mentally retarded. So, why do they have low IQs?

First, why is the IQ low? Social and psychological factors: These children do not have organic brain lesions. They are mainly caused by adverse environmental factors such as neuropsychological damage and sensory deprivation, such as severe lack of early appropriate stimulation and education. Hence the mental retardation.

Second, infection, poisoning, etc.: Infection refers to brain infection before and after birth, such as rubella, cytomegalovirus, toxoplasmosis, herpes simplex virus and many other viral infections. Poisoning includes hyperbilirubinemia, toxemia, lead poisoning, alcohol poisoning, and long-term overdose of drugs. These things may stimulate children's brains and cause their intelligence to decline. Parents must pay attention to this.

Third, congenital malformations or hereditary syndromes of the brain: congenital malformations include hydrocephalus, hydrocephalus, microcephaly, neural tube closure, and brain malformations. Genetic syndromes such as adrenoleukodystrophy. Of course, this situation is not common, but it is also one of the reasons that lead to children's intellectual disability. I hope parents will pay attention to it.

Why is the IQ low? Other perinatal factors: including premature babies, low birth weight babies, intrauterine growth retardation of the fetus, maternal nutritional diseases, pregnancy-induced hypertension, etc. These are very common phenomena, so under these influences, the intelligence of the baby born will definitely be affected, and over time, it will lead to mental retardation. Chromosomal aberration: Chromosomal aberration includes changes in the number or structure of autosomes or chromosomes, such as congenital idiocy, trisomy 18 syndrome, trisomy C syndrome, cat cry syndrome, etc. Mechanical damage and hypoxia to the brain: Brain damage can be caused by physical or mechanical factors before, after, and during delivery, such as birth injuries and craniocerebral trauma. Perinatal or postnatal ischemia and hypoxia can also damage brain tissue, such as severe blood loss in pregnant women, anemia, heart failure, lung disease, neonatal asphyxia, intracranial hemorrhage, and drowning.