Is it true that all children are born blue -eyed?

It is common that every newborn has blue eyes, which later change color. We decided to check if this is so.

Articles that all Babies They are born with blue eyes, you can Meet on cognitive, medical and specialized ophthalmological resources, often even with links to doctors. Users discuss this topic on Portalsdedicated motherhood And childrenas well as female forums. 

Melanin affects the color of the human eye (just as the color of the hair and skin). Human eye color is determined genetically. Most genes associated with eye color are involved in the production, transportation or storage of melanin pigment. The color of our eyes is directly related to the amount of melanin in the front layers of the rainbow shell. If there is little melanin in the iris, the eyes will be blue, if a little larger-green or light-brown, if much larger, then dark brown.

Scientists They saythat in fact, the eyes of each person’s brown are simply not visible. The fact is that Melanin himself, which is responsible for the color, is dark brown, there is no green, blue or gray pigment in the rainbow shell. So how can someone have blue or green eyes? Melanin has the ability to absorb light. At the same time, the more melanin inside the rainbow shell, the more light is absorbed and less reflected out, as a result of which the rainbow shell seems brown. If there is little melanin, the light dissipates, and then reflects on the shorter waves of the blue range of the color spectrum of light and the eyes seem blue. 

Melanin Select Melanocytic cells that respond to light. Since in the womb, children are in complete darkness, Melanin is not produced. However, melanocytes begin to work actively as soon as light falls into the eye of the child. That is why often the color of his eyes during the year after birth can radically change: melanin is produced, accumulated and changes the appearance of the iris. 

Nevertheless, contrary to common belief, not all children are born with blue eyes. In 2016, scientists conducted study In the Children's Hospital, Lucille Packard at the University of Stanford's Medical School and found out that out of 192 children who took part in the eyes of the eyes, 63% had brown eyes at birth. In 20.8%, the eyes were really blue, in 5.7% - green or nuts, in 9.9% - indefinite color. Most of the brown -eyed children were from the families of Latin American, African Americanists or Hawaiians, while children with blue eyes were born mainly among Caucasian parents. However, scientists are noted, there are no data on the origin of many of the studied, so it is still impossible to talk about correlation with confidence. 

The matter is again in genetics: some children have already At birth There is a lot of melanin in the body, to develop it, they do not need the effect of light. Therefore, they are immediately born brown -eyed, and the color of their rainbow shell does not change.

Thus, no, not all children are born with blue eyes. Scientists conducted a study, and in it the brown -eyed babies were as much as three times more than blue -eyed. The sample of the study was quite small, so you can not say that this ratio is true for the whole world and the entire human population. Nevertheless, the brown -eyed newborn babies exist is undeniable.

Not true

What do our verdicts mean?

Read on the topic:

1. Is it true that there is an innate tendency to mathematics?
2. Is it true that licking with children is harmful to their development?
3. Is it true that listening to classical music by a pregnant woman has a positive effect on the fetus?