
"Children are not children" is one of the principles of Toxicology.
Some substances that may be completely harmless in adults can have a huge impact on children.
Young liver and kidneys are not very good at removing toxins and are susceptible to hormones
During development, chemicals are more important than in adulthood.
Children also breathe more air than adults, consume more fluids and food per kilogram of weight, and therefore are more susceptible to air pollution and potential toxins in food or beverages.
Embryos are even more susceptible to developmental disruption, as vividly illustrated by the 1960 s thalidomide case, when the mother taking the morning sickness medication is not affected by herself, but it is more likely to give birth to children with abnormal limbs.
Nowadays, more and more people are worried about the impact of the environment on children's health, because the epidemiology research records the increase in children's asthma, obesity, type 2 diabetes, leukemia, autism, learning difficulties, brain tumors, genital malformation in boys, early puberty in girls, testosterone cancer in young men.
Since these changes have been observed in a relatively short period of time, doubts have focused on substances that have been introduced into the environment about since World War II.
New Plastics, electronic products, food additives, pesticides, herbicides, construction materials, fire prevention agents, personal care products, synthetic fabrics, dyes, paint remover, drugs, detergents, detergents, cookware adhesives and packaging materials bringing thousands of chemicals into the environment, hundreds of such samples were found in human blood and umbilical cord samples.
Many of them have been shown to have potential toxic effects in cell culture, animal research, or occupational environments.
So what can we do if it's unfortunate? We must face the fact that science is limited and cannot solve all problems.
Every day, we are exposed to thousands of chemicals, including naturally produced chemicals and synthetic chemicals, which are undergoing countless chemical reactions in our bodies, which is the Earth.
To illustrate how the relationship between our environment and health is multifaceted and largely unintelligible, it is instructive to consider some basic concepts.
The cornerstone of Toxicology is age.
More than 500 years ago, medieval alchemist, doctor and philosopher parcelsus first came up with the old motto: "Only a dose can make poison.
While this theory is reasonable, it must be noted that the dose may be very small in some cases.
The toxin produced by a gram of Botox, one in a million of Botox, can be fatal! Some hormone-
Just like chemicals, bisphenol A and O-benzene ester are typical examples of trace substances that appear to be insignificant in the blood.
However, their concentration may actually be the same as the concentration range of natural hormones, so the possible effects cannot be ruled out.
Considering that growth hormone is critical to the development of children, it is a very small amount of 5 × 10 grams per milliliter.
However, hormones are also very different.
Like behavior that must be considered.
For example, preservatives in the parabens family have been shown to have estrogen-like-
The effects produced in the laboratory and detected in human blood.
However, it is identified as the most effective estrogen parab gold, and its effect is still 10,000 times that of the body's natural estrogen, estrogen.
Can it produce some subtle effects that are almost undetermined?
Another point is that people are not giant rodents, a substance that has a toxic effect on animals, and the effect on people may not be like this. For example, 2-
Butoxyethanol is a solvent in a variety of commonly used cleaners, which is carcinogenic to rodents at high doses, but the mechanism of action involves the forestomach of birds lacking in humans.
Also, as we know, chocolate contains cocoa, which is toxic to dogs, but fortunately not to humans.
It must also be remembered that there is no reason for the establishment of the Association --and-
Effect relationship.
There is a correlation between increased asthma in children and increased sales of kale.
I think it is safe to say that kale does not cause asthma.
Similarly, it was found that children with obesity had A higher level of biphenol A, neighboring benzene Ester, or perfluoride in their blood, which did not mean that these chemicals would lead to obesity.
In fact, they may exist through some mechanism, but they may only be more likely to exist in processed foods with higher calories.
There is also a consideration that I call the "learning effect ".
"Go deep into any chemicals in the laboratory or rodents and at a certain dose, some toxic effects may be found.
This may not have anything to do with humans, but it may raise concerns if alarmist does not have a proper background.
Given these mixed concepts, it is obviously challenging to draw any conclusions about environmental chemicals and health.
Nevertheless, the American Academy of Pediatrics recently suggested that it is wise and simple to give priority to fresh fruits and vegetables, limit the processing of meat, and avoid heating food with plastic.