How Depression Can Affect Intelligence IQ
Intelligence genes inhibit obesity and promote depression
Is Intelligence Hereditary? According to scientists, yes. However, the environmental conditions must also be right so that intelligence can develop accordingly.
It has been known for several years that intelligence can be hereditary. What is new is that there are also around 40 genes that are responsible for the ability to think. This is the result of Danielle Posthuma and her research team from the Netherlands.
At least 40 genes are responsible for intelligence
In the study, which was published in the science magazine "Nature America", the scientists examined around 20,000 children and 60,000 adults of European descent. The subjects had to complete an intelligence test before their genetic material was examined. The scientists discovered 52 genes that are important for intelligence. For 40 genes, the influence on intelligence was not known until then. They are primarily active in the brain and are responsible for the maturation of nerve cells and the formation of synapses and thus support the ability to think.
In their investigations, the researchers also discovered gene variants that promote intelligence and at the same time suppress obesity and schizophrenia or influence body size and skull volume. However, the intelligence genes also have negative effects: They increase the risk of Alzheimer's, hyperactivity and depression.
According to Posthuma, the results provide "for the first time clear indications of the biological mechanisms underlying intelligence".
Intelligence changes with age
In children, according to scientists, the genetically determined intelligence difference is 45 percent, in adults it is even 80 percent. This is also confirmed by an earlier study. Thus, environmental influences and lifestyle habits are an important factor in determining the level of your own IQ. "We know today that the genes associated with intelligence do not simply unfold, but that a stimulating environment is necessary so that skills can develop," explains psychologist Rainer Riemann from Bielefeld University to "Spiegel Online". These influences are changing the genetic makeup is also minimal.
Will there be an IQ genetic test soon?
According to scientists, however, the newly discovered genes can only explain 4.8 percent of the differences in intelligence in people - that is, only a fraction. As a result, there will be no genetic test for determining IQ in the near future.
Important NOTE: The information is in no way a substitute for professional advice or treatment by trained and recognized doctors. The contents of t-online cannot and must not be used to independently make diagnoses or start treatments.
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