Scientists can measure intelligence by testing saliva after showing for the first time that your Intelligence Quotient (IQ) can bee predicted by studying your DNA.
Researchers have identified 538 genes that can influence how clever people are, and say that can be obtained by using a simple mouth swab. They used data from the UK Biobank - a genetic study into health and disease - to compare DNA with IQ scores in more than 240,000 people.
They found that the genes accounted for a difference of up to 7 per cent in IQ by boosting the way neurons carry signals to the brain. Some influenced other biological processes, including the length of life.
Principal Investigator, Professor Ian Deary, of the Centre for Cognitive Ageing and Cognitive Epidemiology at Edinburgh University, said: "this study suggest health and intelligence are related in part because some of the same genes influence them."
They concluded that intelligence can be a "heritable trait", and found the study was able to predict it in one study group "using only their DNA."
HMHB actively promotes and active lifestyle. Exercise boost the blood flow around the body, and oxygen intake, and this itself boost confidence and esteem. Staying hydrated too can help you focus better. There are many factors that influence intelligence, which includes what kind of help you get as a child from a parent. But it is interesting to see they link it to genes.
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